Recent Developments in the Study of Dental Caries.

Recent Developments in the Study of Dental Caries: Scientific Apparatus and Laboratory Methods: DR. RUSSELL W. BUNTING ........................................ 419 Physiologically Balanced Culture Solutions with The Engineering Foundation: ALFRED D. FLINN ...... 424 Stable Hydrogen-ion Concentration: PROFESSOR SAM F. TRELEASE and HELEN M. TRELEASE ............ 438 Obituary: Dr. E. N. Lowe: D. CALVIN S. BROWN. MeSpecial Articles: orials. Recent Deaths..... ..................428 The Evolution of Cerebral Localization Patterns: Scientific Events: PROPESSOR C. JUDSON HERRICK ....................... 43R, Sir Henry Lyons and the Science Museum; The Annual Election of Officers of the American ChemScience News ...................... 8 ical Society; The American Institute; The Virginia Academy of Science; Semicentennial Meeting of the American Ornithologists' TUnion .................. 429 SCIENCE: A Weekly Journal devoted to the AdvanceSoientiflc Notes and News .................... 432 ment of Science, edited by J. MCKEEN CATTELL and pub-