fund for the meeting and will help defray some of the costs. But, if you are a paid-up member of the American Association for the Advancement of Science or if you are an associate for this meeting, the registration fee may be remitted to you; that is, you may register without paying the fee. Paid-up members should bring with them to Nashville their blue membership cards for 1927-28. Registrants who are not paid-up members of the association or associates may place themselves in the privileged category by paying their dues before registering. Personally invited guests are not to pay the fee. Instructions regarding procedure for those not paying the registration fee will appear on the reverse of the registration card. The card is to be filled out whether the fee is to be paid or not.

Registration will be Accomplished as Follows: Fill in the blanks on a registration card, which will be furnished in the registration room, and present the card at the cashier's desk, paying the registration fee if required. The registration card will be stamped to show whether the fee is paid or not. Then present the registration card to the registration clerk, who will keep it and will give you a numbered official identification card, together with the badge for the meeting, a copy of the General Program, etc. The identification card will be specially stamped if the registration fee has been paid and your name will be placed immediately in the visible directory of those in attendance. After registration you should leave your railway certificate at the validation desk, where your identification card will be marked to show that a certificate has been left. (See above, under Transportation to and from Nashville.)

Delegates from institutions and organizations, and all personally invited guests, are specially requested to register as such, noting on their registration cards their exact status in this particular.

Visitors from outside of the United States and Canada who are not members of the association may be invited to the meeting as guests of the association. Members of the association should make recommendations as to visitors who should receive official invitations, giving reasons. Such recommendations should be in the permanent secretary's office in Washington by December 20 at latest.

SPECIAL PRIVILEGE FOR MEMBERS OF
AFFILIATED SOCIETIES

New members of the association regularly pay an entrance fee of five dollars, which is now remitted, however, to members of any affiliated organization, including the affiliated state academies. Those who join at the Nashville meeting and take advantage of this privilege should fill in the blanks on a blue membership application card and present card and

dues for 1927-28 ($5.00) at the membership-dues desk in the registration offices in the Andrew Jackson Hotel. New members who join the association at the meeting are entitled to register without paying the one-dollar registration fee.

Copies of a booklet on "The Organization and Work of the American Association," as well as membership application cards and sample copies of the journals, may be secured at any time from the permanent secretary's Washington office in the Smithsonian Institution Building. Membership in the association includes a subscription to the weekly journal SCIENCE, or The Scientific Monthly, for the calendar year beginning at the close of the annual meeting. The journal alone is worth more than the annual membership dues. By special arrangement with the publishers, members in good standing may have both SCIENCE and The Scientific Monthly by paying $3.00 in addition to the annual dues ($8.00 in all). Members of the association may also subscribe for The Science News-Letter, published by Science Service, Washington, D. C., at the specially reduced price of $3.00 per year.

INFORMATION SERVICE, MAIL, EXPRESS, TELEGRAMS, ETC., AT THE NASHVILLE MEETING

Those in attendance at the meeting may obtain information of all sorts by applying at the Information desk in the registration offices, in the Andrew Jackson Hotel. Attention is called, however, to the visible directory of those in attendance, from which information regarding attendance and the addresses of attending members of the association and societies may be obtained without application at the desk.

Persons attending the meeting may have mail, etc., addressed to them in care of the American Association for the Advancement of Science, Registration Offices, Andrew Jackson Hotel, Nashville, Tenn. They should inspect the personal bulletin every day, which will be conveniently located. If a person's name appears on this bulletin, he should inquire at the proper desk for mail, etc. Uncalled for telegrams will be sent to hotels or dormitories each afternoon when the regis tration offices close.

BUSINESS SESSIONS OF THE ASSOCIATION AT NASHVILLE

The members of the executive committee of the association council, the secretaries of the association sections and the secretaries of the scientific societies that meet with the association this year will dine together on Friday, December 30, at 6:30 at the Andrew Jackson Hotel. The dinner will be complimentary, from the American Association. The evening will

be devoted to the annual secretaries' conference on the affairs of the association and its relation to the associated organizations.

The executive committee will hold its first Nashville session in the permanent secretary's room at the Andrew Jackson Hotel, on Monday, December 26, at 10 o'clock. Matters for consideration on Monday by the committee or by the council should be transmitted to the Washington office, to arrive by December 20. Other sessions of the executive committee will be held at 10 o'clock on Tuesday, Wednesday, Thursday and Friday mornings, in Room 101, Industrial Arts Building, George Peabody College for Teachers.

The council of the association will meet in the Andrew Jackson Hotel on Monday afternoon, December 26, at 2 o'clock. Other sessions are scheduled to occur at 9 o'clock on Tuesday, Wednesday, Thursday and Friday mornings, in the council room, Room 101, Industrial Arts Building, George Peabody College for Teachers. It is probable that the annual election of officers of the association will occur at the council session Thursday morning. Business to be considered by the council must regularly be first brought before the executive committee through the permanent secretary. Communications for the permanent secretary should be addressed to the Washington office (to arrive by December 20) or to the Andrew Jackson Hotel (to arrive December 26). During the meeting they may be handed in to Mr. Woodley in the registration offices, at the same hotel.

Immediately following the council session on Monday afternoon, an academy conference will be held by the association's special committee on academy relations. This committee consists of the representatives of the affiliated state academies (one from each affiliated academy), together with all members of the committee on interacademy relations that was appointed by the academy conference at Philadelphia, and three members representing the executive committee of the association. The members of the special committee will dine together following the conference, at the association's complimentary academy dinner, at 6:30, at the Andrew Jackson Hotel. The dinner will be over in time for the opening session of the Nashville meeting. A special session of the Tennessee Academy of Science is announced for Monday morning at 10, to welcome visiting members of other state academies.

THE SCIENCE EXHIBITION

The annual exhibition of scientific apparatus, materials, methods, books, etc., will be in the Andrew Jackson Hotel, adjacent to the registration offices. Nearly all the available space has been engaged by

the exhibiting firms, but some attractive exhibits of a purely scientific nature will be included. The exhibition has become a very important part of the annual meeting. Its popularity steadily increases from year to year, both with the exhibiting firms and with those who attend the meeting. It furnishes a ready means by which those who purchase laboratory apparatus and supplies and scientific books may examine the products of the best makers and publishers. It also makes it possible for research workers to become acquainted with new models of apparatus, new methods and new publications in their own and other fields. The exhibition has become a sort of social center, also, a place where friends and acquaintances may meet and spend many agreeable and profitable periods during the week of the meeting. Such exhibitions are very effective in promoting the personal exchange of ideas, not only among scientists in the same field but between workers in widely different sciences.

As in recent years, the Nashville exhibition will be in charge of Major H. S. Kimberly, exhibition manager. It is under the general direction of the exhibition committee, of which H. E. Howe, editor of the Journal of Industrial and Engineering Chemistry, is chairman. Major Kimberly has had valuable help from the local committee on exhibition, of which Dr. J. M. Breckenridge, professor of chemistry in Vanderbilt University, is chairman.

GENERAL SESSIONS OF THE ASSOCIATION

The second Nashville meeting will be held under the presidency of Dr. A. A. Noyes, eminent chemical investigator and leader in chemical education, professor of chemistry and director of the Gates Chemical Laboratory of the California Institute of Technology.

The general sessions at the annual meetings of the association are planned to be of interest to all workers in science and to educated people generally. They are the only sessions held by the association as a whole. The following notes give information about the general sessions that are planned for the Nashville meeting, as far as statements can be made at the time this preliminary announcement goes to press. Times of occurrence may require alteration.

The opening session will occur on the evening of Monday, December 26, in the auditorium of the Nashville War Memorial Building, at 8 o'clock. The main speaker of the evening is to be Dr. L. H. Bailey, well-known student of systematic botany, author and editor of our most valuable reference books on cultivated plants and many books on nature and rural life. Dr. Bailey was president of the association

last year. He is to deliver at Nashville the address of the retiring president, on "The Biologies."

Following the opening session will occur the general reception to those who attend this meeting, by the local committees and other local representatives. Refreshments will be served. The reception is to be in the Andrew Jackson Hotel, Deadrick St. and Sixth Ave.

On Tuesday evening, December 27, in the auditorium of the War Memorial Building, the sixth annual Sigma Xi lecture will be given. This lecture is provided by the Society of the Sigma Xi and regularly occurs on the second evening of the annual meeting of the association. The lecturer this year is Dr. Clarence Cook Little, president of the University of Michigan, eminent student of genetics, especially in relation to susceptibility to cancer. He will speak on "Opportunities for research in mammalian genetics."

Wednesday, December 28, will be characterized by two general sessions bearing on the diffusion of scientific knowledge, "Science for the People." A morning and an afternoon program are being arranged by Austin H. Clark, of the U. S. National Museum, science-news manager of the association.

Wednesday afternoon at 4:30 is to be given the fifth annual Josiah Willard Gibbs Lecture, under the joint auspices of the American Mathematical Society and the American Association. This lecture is arranged by the American Mathematical Society. The lecturer this year is Professor Ernest W. Brown, of Yale University, eminent mathematician and astronomer. Dr. Brown's subject is "Resonance in the solar system."

The retiring vice-presidential address, for Section D (Astronomy) is to be given at the general session on Wednesday evening, by Dr. Robert G. Aitken, of the Lick Observatory, Mount Hamilton, California, well known for his researches on binary stars and in other fields of astronomy. He will speak on the life and work of Edward Emerson Barnard. That noted astronomer was born in Nashville in 1857, and was graduated from Vanderbilt University in 1886. He made many valuable contributions to astronomy, among which may be mentioned the discovery of the fifth satellite of Jupiter. It is specially fitting that a general session at this Nashville meeting should be devoted to his memory.

A general session on the afternoon of Thursday, December 29, is to be devoted to a series of papers by well-known investigators, on some phases of the economic relations of science workers. This program has been developed by the Committee on the Economic Status of College and University Workers, a subcommittee of the association's Committee of One Hun

dred on Scientific Research, of which Dr. Rodney H. True, of the department of botany of the University of Pennsylvania, is secretary. The opening address is to be by Dr. A. A. Noyes, president of the American Association. Mr. Harrison E. Howe, editor of Industrial and Engineering Chemistry, will speak on "The relation of research to wealth increase." "Comparative salary scales of trained men" is the subject of a paper to be presented by Dr. Rodney H. True, secretary of the Committee of One Hundred. Professor Jessica B. Peixotto, of the department of social science, University of California, author of "Getting and spending at the standard of professional living," will discuss "Family budgets of university faculty members." Discussions of these papers will follow by well-known scientists. This session should prove to be of great interest to all who attend the Nashville meeting.

Another general session, on "Aquiculture," is being planned for Thursday afternoon, at 2:30. A program of invited papers is being arranged by Professor Robert E. Coker, of the University of North Carolina, for the Committee on Aquiculture, a committee organized at the request of the National Research Council. The committee invites the counsel and cooperation of those interested in hydrobiological research or in the practical development of aquiculture. It is hoped that botanists, zoologists, geologists, chemists, meteorologists, engineers, economists and others may cooperate to promote the utilization of water areas for the culture of fishes, water birds, crustacea, pearl mussels, fur-bearing mammals, aquatic and swamp plants, etc.

Some of the most fundamental problems of biology are involved in this project.

The general session Thursday evening is to be devoted to a lecture on "Science and the Newspapers," by Dr. William E. Ritter, well-known research worker and leader in zoology and writer on philosophical aspects of biology. Dr. Ritter was the organizer and for many years the director of the Scripps Institution of Oceanographic Research, at La Jolla, California. He has been a leader in the organization and guidance of the popular Science Service, of Washington, D. C., which was endowed by the late E. W. Scripps for the purpose of supplying science news to the daily press. This general session will continue and round out the Wednesday symposium on "Science for the People." The following note on his address has been received from Dr. Ritter:

Science and journalism are both very powerful influences in modern civilization, but they have developed independently in large measure and they are sometimes more or less antagonistic. A study of the work of such men as Benjamin Franklin and Thomas Jefferson, who combined scientific research with ardent support of the

newspapers and who mightily influenced our material development, leads to the thought that closer cooperation is needed between the scientists and the journalists.

NON-TECHNICAL LECTURES AT NASHVILLE Recognizing that the truths of science, the scientific method of thought and the principles and standards of scientific scholarship need to be presented at every opportunity to the general public and especially to adolescents, the American Association generally provides a number of non-technical lectures and demonstrations at the annual meetings. A series of such lectures is being arranged for the people of Nashville, some of them especially for students in the schools. These will be announced later. Speakers will be provided for several luncheon-meetings of local organizations.

A TRIP TO THE GREAT SMOKY MOUNTAINS Those who attend the Nashville meeting are invited to visit the Great Smoky Mountains after the close of the meeting. Those who take advantage of this invitation will be provided with transportation and entertainment for the trip from Knoxville to the mountains and return, as guests of the Chamber of Commerce of Knoxville, Tenn. A national park is being established in the Great Smokies, which are exceptionally rich and varied in both flora and fauna. Many peaks rise to elevations of over 6,000 feet above sea level and the region presents many interesting geological features, stratigraphic, structural and physiographic.

This invitation to visit the Great Smoky Mountains is from the Tennessee Academy of Science, the University of Tennessee, Vanderbilt University, the Great Smoky Mountains Conservation Association, the Smoky Mountains Hiking Club and the Knoxville Chamber of Commerce. Correspondence concerning the trip may be addressed to Professor L. R. Hesler, Botany Department, University of Tennessee, Knoxville, Tenn. During the meeting information in this connection may be had in the registration offices, in the Andrew Jackson Hotel.

SESSIONS OF THE SECTIONS AND SOCIETIES

Nearly all branches of science will be well represented in the many scientific sessions of the sections and associated societies at Nashville. Preliminary notes on the programs that are being arranged for these sessions are given below. The information has been contributed by the section and society secretaries, for whose cooperation in the preparation of this section of our announcements the permanent secretary is deeply grateful. Full information about the scientific sessions will be given in the General

Program of the meeting, which will be available Monday morning, December 26, at the registration offices, in the Andrew Jackson Hotel, at Nashville. A copy of the book will be mailed free to any member in good standing whose request for it is received before December 22 at the Washington office of the association.

The following accounts are arranged under headings that correspond to the sections of the American Association.

A. Mathematics.-The American Mathematical Society and the Mathematical Association of America will meet jointly with Section A of the American Association for the Advancement of Science on Thursday afternoon, December 29. Professor E. V. Huntington, of Harvard University, retiring vicepresident for Section A, will deliver his address on "The notion of probable error in elementary statistics." Of the two other addresses one will be by Professor Dunham Jackson, retiring president of the Mathematical Association of America, on "The human significance of mathematics;" in the second Professor Arnold Dresden, of Swarthmore College, representing the American Mathematical Society, will speak on "Some philosophic aspects of mathematics." The fifth Josiah Willard Gibbs Lecture, under the auspices of the American Mathematical Society and the American Association for the Advancement of Science, is to be delivered at a general session Wednesday afternoon, December 28, by Professor E. W. Brown, of Yale University, the title of his lecture being "Resonance in the Solar System." The American Mathematical Society will hold sessions for the presentation of papers, Wednesday morning and afternoon and Thursday morning, December 28-29. On Wednesday morning Professor James Pierpont, of Yale University, will deliver an address on "Mathematical Rigor, Past and Present." The Mathematical Association of America will hold morning and afternoon sessions on Friday; addresses will be given by Professors Archibald Henderson, A. R. Crathorne, Jewell Hughes, J. A. Harris and E. P. Lane, and by Vice-principal W. Betz. An informal dinner will be held on the evening of December 29 at the mathematical headquarters, Ward-Belmont College for Women, where the mathematical sessions are also to be held.

B. Physics.-Section B of the American Association will meet jointly with the American Physical Society and with the American Meteorological Society. The meetings will occupy Wednesday, Thursday and Friday, December 28 to 30. Wednesday afternoon will be given the retiring vice-presidential address for Section B, by Professor William Duane, of Harvard University, and an address by Dr. C. J. Davisson, of the Bell Telephone Laboratories. Pro

The

fessor Duane's title is "The General Radiation." Dr. Davisson has been invited to speak on "Diffraction of Electrons by a Crystal of Nickel," a subject of great significance in the new quantum dynamics. His address will be followed by a discussion. This Christmas meeting of the American Physical Society is also its annual meeting, at which (in alternate years) the address of its president is given. The subject chosen this year by the president of the society, Professor K. T. Compton, of Princeton University, is "Recent Studies of the Electric Discharge." The address will probably be given Thursday. The regular program of the American Physical Society, for the reading of ten-minute papers, will constitute several sessions. Headquarters for physicists will be the Ward-Belmont Dormitories. The American Meteorological Society will hold sessions on Thursday and Friday. The society will join with the Association of American Geographers and Section E in a symposium on "The Mississippi River, its Problems and its Control," in which the U. S. Weather Bureau will be represented by several speakers. A session will be devoted to the Tennessee Weather Service, with a luncheon or informal dinner, to bring together as many as possible of the original observers and prominent meteorologists whom Tennessee has produced. In the general program, the winds of the United States, climatological observations for students in the field, and many other subjects will be discussed. meteorological headquarters will be The Hermitage Hotel, Union St. and Sixth Ave.

The

C. Chemistry. The program of Section C includes several half-day sessions, mainly on Tuesday and Wednesday, December 27 and 28, to avoid as far as possible conflict with the Symposium in Organic Chemistry to be held in Columbus, Ohio, later in the week. Professor Lauder W. Jones, the retiring vicepresident for the section, will speak on "A Glimpse at Chemistry here and abroad." He has spent much of the last two years in Europe and this address will be very valuable. Among others who will address Section C may be mentioned at this time Professor W. A. Noyes, of the University of Illinois, Professor Harry B. Weiser, of Rice Institute, and Professor James Kendall, of New York University. Professor Noyes will speak on "Valence." Professor Weiser has chosen as the title of his address "Ionic Antagonisms in Colloid Systems." Professor Kendall will give a paper entitled "Separations by the Ionic Migration Method." In addition to the above there will be a number of shorter papers. Section C will meet with Section N on Wednesday forenoon, for a joint session on "Contributions of Other Sciences to Medicine." Headquarters for chemists will be the Sam Davis Hotel, Commerce St. and Seventh Ave.

D. Astronomy.-The American Astronomical Society is not meeting with the association this year and the Nashville program on astronomy will therefore be wholly in the hands of section D. The sessions will occur early in the week, to permit those in attendance to get to New Haven for the meetings of the Astronomical Society there. Nashville was the birthplace and home through youth to manhood of the eminent astronomer Edward Emerson Barnard. The address of the retiring vice-president for the section, Professor R. G. Aitken, of the Lick Observatory, will take cognizance of this by reviewing the life and contributions of that illustrious man of science. It will be given in the general session Wednesday evening. The Josiah Willard Gibbs Lecture, of the American Mathematical Society, to be given this year by Professor E. W. Brown, of Yale University, on "Resonance in the Solar System," will interest workers in astronomy. It will occur at the general session Wednesday afternoon. Headquarters for astronomers will be the dormitories of the Ward-Belmont College for Women.

E. Geology and Geography.-Section E will meet at Nashville Tuesday and Wednesday, December 27 and 28, under the chairmanship of Professor Charles Schuchert, of Yale University, in conjunction with the Association of American Geographers and the National Council of Geography Teachers. The address of the retiring vice-president for the section, Dr. George H. Ashley, geologist of the Commonwealth of Pennsylvania, will be on "Geology and the World at Large." Section E is arranging a symposium to be held Tuesday, on the "Geology of the Gulf States," to include reviews by state geologists and correlations by specialists. The Association of American Geographers will hold several sessions at Nashville, but information concerning the programs is not at hand. The National Council of Geography Teachers will meet Tuesday and Wednesday, with special emphasis given to the subject of "teacher training." The headquarters of the council will be in West Dormitory, George Peabody College for Teachers.

F. Zoological Sciences.-Section F will present no program of its own at Nashville, since several of the associated societies are to be meeting there. The retiring vice-presidential address for the section will be given by Dr. Winterton C. Curtis, of the University of Missouri, at a dinner for all zoologists, Thursday evening, December 29. His title is "Old Problems and New Technique." The American Society of Zoologists will hold its twenty-fourth annual meeting on Wednesday, Thursday and Friday. Many contributions are to be presented by demonstration or exhibit in the laboratory rather than by formal reading. A biologists' smoker is being arranged.