Barus, Professor, and Colloid Chemistry, J. ALEXANDER,

BENEDICT, F. G., The Differential Calorimeter, A. K.
Noyons, 448

Berg, von R., Die Vitamine, A. J. CARLSON, 304
BERRY, E. W., Frank Hall Knowlton, 7; Pflanzen als
Gesteinbildner, J. Pia, 327

Bibliographicum, Concilium, V. KELLOGG, 248

BIGELOW, H. B. and C. ISELIN, The Labrador Current, 551
Biogeography, The French Society for, L. Fage, 208
Biological, Station, Bermuda, H. W. RAND, 128; V. KEL-
LOGG, 535; Relationships, A. H. CLARK, 241
Biology, in France, R. M. MAY, 53; Relation to Physics,
T. H. MORGAN, 213; at the University of Maine, P. W.
WHITING, 399; Experimental, Federation of American
Societies for, F. C. KOCH, 529; Physico-chemical, In-
stitute of, in Paris, 589

Birds, Game, Southwestern, J. GRINNELL, 528

BIRKHOFF, G. D., A Mathematical Critique of Some Phys-
ical Theories, 147

BLINKS, L. R., Valonia and Halicystis, 429
BLUMENTHAL, R., A Micro-blood Sugar Method, 617
Botany, Sydney School, E. C. J., 248

BOUYOUCOS, G. J., Soil Moisture and Alcohol, 375; The
Mechanical Analysis of Soils, 549

BRASCH, F. E., Sir Isaac Newton's Bicentenary, 318

BRIGGS, C. H., When is Mid-Winter?, 424

Britannica, Encyclopaedia, T. D. A. COCKERELL, 258

British, Scientific Workers, 365; Association, 609

BROOKS, M. M., The Journal of General Physiology, 208

BROWN, E. D., American Society for Pharmacology and

Experimental Therapeutics, 530

BROWN, F. C., Emile Berliner, F. W. Wile, 235
BROWN, J. H., Filing Microscope Slides, 501
BROWN, L. P., Publication by Photography, 184

BROWNE, C. A., Three Centuries of Chemistry, I. Masson,
303

BRYAN, E. H., JR., Hawaiian Academy of Science, 620
Bucephalus cercariae, A. E. WOODHEAD, 232
BURGESS, P. S., NaOH versus Na2CO3, 445

BUTTS, D. C. A., T. E. HUFF and F. PALMER, JR., Ex-
perimental Animal Tumors, 304

BUWALDA, J. P., The Geological Society of America, 430
BYRD, R. E. and V. STEFANSSON, Arctic Flying, 523

CADY, H. P., The Chemistry of the Future, 1

CAJORI, F., Precession of the Equinoxes, 184; The

Logarithms of Napier, 547

Calcium, Isotopes of, E. K. PLYLER, 578

California Academy of Sciences, Field Work of, 539

Cancer, Boveri on, F. C. WOOD, 14; A. SCHNEIDER, 14

CARLSON, A. J., Research as a Method of Education, 125;

Die Vitamine, von R. Berg, 304

CASTELLANI, A., G. C. Low, D. NABARRO and R. Ross,
de Kruif's Microbe Hunters, 325
Catalysis, Factors in, J. ALEXANDER, 62