BOOK REVIEWS throughout. The burden nf all this symbolism is enough to detract (or nomhj a student's attention from significant information. Types of amplifiers-tuned, power, operational, etc.-are displayed in subsequent chapters and their significant features are expressed in quantitat,ive form. Component values are given for mast amplifier circuits and the suggestion is made that they may he found useful for lahamtory experiments. Ilowev~r, no claim is made that all circuits work. Much of the material is useful for reference information through the convenience of an index having about 700 entries. Each chapter has a substantial nomher of exercises with numerical answers. The find chapter is titled Measurement Circuits and one might expect that here the subject would be placed in perspective for students of experimental science. The chapter contains only 40 pages and the measurement circuits have, in part, been already described in previow chapt e a . A very weak point in the chapter is the section headed The pH Meter hut t~ctudlyabout pI-I electrodes. I n d d i tion to having minor erran, it is a. familiar topic to many students for whom the hook was written. Other diverse topics included in this chapter are on wavegtcides, delay lines, electrometers, and magnetic tape recorders. The total pitch of this hook is toward basic electronics and the subject is well presented. There is little r o a ~ o n to h e lieve that the contents will appeal only to science students; engineering students as well may find t,hisbook useful.
D.
