J. LAWRENCE SMITH,

MEMBRE CORRESPONDANT DE L'INSTITUT DE FRANCE (Academie des Sciences), ETC.

PRINTED FOR PRESENTATION ONLY.

EDITED BY J. B. MARVIN, B. S., M. D.

LOUISVILLE, KY.

PRINTED BY JOHN P. MORTON AND COMPANY.

PREFACE.

At the request of Mrs. J. Lawrence Smith I have collected into one volume the more important contributions to science of the late Professor J. Lawrence Smith. In 1873 Prof. Smith issued a volume entitled "Scientific Researches," which contained the more important of his scientific papers published up to that date. I have republished this volume entire, adding to it most of his scientific papers published in various journals since that date. The articles have been arranged chronologically, except in a few cases, when there were two or more articles on the same or kindred topics, when they were grouped together. References to place of original publication are given and an index has been added. All the articles on meteorites are grouped together and constitute a separate and important portion of the volume. The list of scientific papers published by Prof. J. Lawrence Smith embraces 145 separate titles, many of which are not included in this volume. All papers published prior to 1873, not included in the volume of "Scientific Researches," have been omitted; of the papers published since 1873, a number of which were reprints from Prof. Smith's Reports on the Paris and Vienna Expositions, have also been omitted; also a few which appeared in French and did not differ materially from articles published in English. A few articles, which were published in French only, are republished in that language. This volume represents strictly original investigations. The subject-matter of the original articles has not been changed, except to correct palpable

errors.

My thanks are due Prof. B. Silliman for material assistance in the preparation of this volume.

This volume is intended as a memorial volume for presentation to the scientific friends of Prof. J. Lawrence Smith. By request of Mrs. Smith the brief biographical sketches prepared by the editor, Dr. Michel, and Prof. Silliman, are inserted in the order in which they were originally published.

LOUISVILLE, Dec. 15, 1884.

J. B. MARVIN.