GENERAL VIROLOGYBy S. E. LURIA, of the University of Illinois

This book projects the new idea that virology can be studied and taughtmost successfully as a basic biological science. It examines the viruses in theirtotalities, and stresses generalizations rather than exceptions. The book inter-prets both the biochemical and pathological aspects of the science, consideringboth the physical and chemical approach to virus particles and the cell-physiological approach to virus-infected host cells. Among the problemsdiscussed are those of the "living nature" and "origin" of the viruses. As-serting the importance of "operational" versus "analogic" terminology, thebook presents facts about individual viruses as model systems or examples.1953. 427 Pages. $8.50.

BIOCHEMICAL PREPARATIONS, Volume III

Editor-in-Chief, ESMOND E. SNELL, University of TexasThe most recent addition to the well-known series, this volume provides

readily duplicable and checked procedures for 26 preparations. The proceduresincluded were ch6sen in an attempt to illustrate the various laboratory proced-ures the biochemist can use most profitably. Isolation methods and othermaterial of use in preparative work are given. 1953. 128 pages. $3.50.

NUCLEAR MOMENTSBY NORMAN F. RAMSEY, Harvard University

An outgrowth of material ofiginally published under the editorship ofEmilio Segre in Volume I of Experimental Nuclear Physics, this work isconcerned with nuclear moment research in the fields of the stable and radio-active nuclei. The book, in five sections, defines the quantities concerned inmoment measurement; describes the interaction between moment and molec-ular field; provides a description of the experimental methods used inmeasurement; summarizes the results of significance to nuclear physics, anddiscusses the results of special significance to chemistry and solid statephysics. Includes an appendix amplifying the discussion of nuclear theory.1953. Approx. 176 Pages. Prob. $4.50.

DAIRY CATTLE FEEDING AND MANAGEMENT, 4th EditionBy H. 0. HENDERSON, West Virginia University;

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