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All through this text Dr. Howell has real-ized that physiology is the foundation ofmedicine and so he has stressed thosefacts which will be directly helpful inpathology and the other branches of prac-tical medicine. Mforeover, he has sum-marized into usable conclusions the greatvolume of physiologic research work ofthe world's physiologists.Octavo of 1132 pages, with 308 illustrations. By William H.Howell, Ph.D., M.D., LL.D., Emeritus Professor of Physi-ology in Johns Hopkins University. Cloth, $7.00 net

Laboratory DiagnosisThis is a book of simplified methods forthe examilnation of urine, sputum, blood,gastric and duodenial contents, feces,puncture fluids, pus, and all other patho-logic material. Then it interprets thefindinigs in terms of clinical medicine.Here are just a few of the features ofthe 7th edition:its simplicity and concisenessits simplicity of equipment neededits absolute up-to-datenessits value in applied medicineits large chapter on the microscopethe alphabetical list of diseases, giving labora-

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Octavo of 765 pages, with over 500 illustrations on 303figures, 51 in colors. By James Campbell Todd, M.D., lateProfessor of Clinical Pathology, University of Colorado;and Arthur H. Sanford, M.D., Professor of Clinical Pathol-ogy, Uniiversity of Minnesota (The Mayo Foundation).

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6 VOL,. 79, No. 2049

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AT THE close of the day, at the end of theweek, at the turn of the year, when yourmind ranges back to sum it up, what countsfor most?

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1 1494-A Freas Incubator, No. 30, 18 x S18 x 18 inches, Slightlyhigh stand .................... ....... shopworn 275.00

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SCIENCE-ADVERTISEMENTS VoL. 79, No. 20498

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9APRII, 6, 1934 SCIENCE-ADVERTISEMENTS