well as to the transactions ofthe previous conferences. The reader soon realizes that this is more than a textbook account ofshock or a monograph. As he reads, he is observing, as ifon a television screen, experienced investigators sifting the evidence from a given experiment. The data are examined and re-examined, more deeply at each succeeding step. And interspersed throughout the discussion ofshock itselfis material relating to science in general, a notable example being Dr. Knisely's remarks about positive and negative causation. Surely a conference ofthis sort can provide one form ofintroduction to the scientific method, making the book useful to graduate and medical students, who need only a minimal knowledge ofhemodynamics, immunology, and biochemistry in order to understand the material. John F. Perkins, Jr. University ofChicago Harvard Case Histories in Experimental Science. James Bryant Conant, general editor; Leonard K. Nash, associate editor. Cambridge, Mass.: Harvard University Press, 1957. 2 vols. Pp. xvi+639. $10.00. In his Introduction to these unique and splendid volumes, Dr. Conant states that they were designed to impart an understanding ofscience to the general reader and, inparticular , to undergraduate students in the humanities and social sciences. He points out that the layman's inability to comprehend scientific thought often stems from ignorance of the nature ofscientific inquiry rather than from lack ofknowledge ofspecific facts or doctrines . Careful observation and controlled experimentation are stressed as the most important characteristics of science, which is defined as "a series of concepts or conceptual schemes arising out ofexperiment and observation and leading to new experiments and new observations." In a simple but profound manner, it is emphasized that the development of modern science can be understood only in terms of the mutual interaction of theory and experiment and ofthe relationship ofadvances in experimental technique to the practical arts. Selected "case histories" of important advances in science are presented to illustrate the "tactics and strategy" peculiar to the experimental investigator. The first case is an account ofBoyle's studies in pneumatics, which is followed by a discussion ofthe experiments ofPriestley and Lavoisier which led to the discovery ofoxygen and to the abandonment ofthe phlogiston theory. The third chapter, prefaced by a succinct, lucid account ofthe evolution ofthe thermometer, deals with the development ofthe concepts oftemperature and heat. The fourth case relates the investigations of Dalton, Gay-Lussac, Dumas, and others which provided the basis ofthe atomic dieory. Early studies on photosynthesis in green plants are then discussed, with special attention to the pioneering ob-, servations ofIngen-Housz and Senebier. Two chapters are concerned with Pasteur's discoveries on fermentation and spontaneous generation. The book concludes with a history ofthe experimental foundation ofthe concept ofelectric charge. Following a short introduction , each case consists ofextensive quotations from the original texts, interspersed at frequent intervals with comments on the more salient points. Some chapters contain short reviews ofmore recent advances, in order that the investigations cited can be related 250 Book Reviews Perspectives in Biology and Medicine · Winter 1939 to contemporary understanding of the problem—particularly well exemplified by the outline ofsome elementary principles ofbiochemistry in the discussion ofPasteur's study of fermentation. Appended to each chapter is a helpful bibliography and in some cases a series ofpenetrating questions. Science impinges on so many aspects ofour lives that it is essential for the intelligent layman to be conversant with the type ofthinking used in the laboratory. This presentation of major scientific advances in their historical context conveys in an unambiguous manner the essentials of the scientific method as well as the excitement which accompanies great discoveries. Although this fine work is intended primarily for the general public, it will be ofundoubted value for every student and practitioner ofscience. H. Guy Williams-Ashman University ofChicago 251 ...
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