BOOK REVIEWS tlx value of this monograph lies in the details of suitable appitratus and teclrniqucs of procedure which i t oontains. For emmple, analytical methods applicable t o inorganic ions of each periodic table subgroup were devised by the author. Important variables such as collector t .. y m ,. pH and t~mnereture,are eonsidrrod . also. The value of this monograph is principally the cmphasis placed on the broad potential utility of the technique of ion flotation. I t will suffiae if efforts of other scientists are stimulated t o increase the list of applications. Perhaps most industrial and institutional libraries will add this volume sutomatieally to their cdlrrbions; however, t,here is little nerd fnr the individual scientist to do so.
JOHN CHESSICK Lehigh Universit~, Relhlehm~,Penns!,luonia
Multicomponent Dirlillotion
Charles D. Holland, Agricultural and Merhanicd C o l l e ~ eof Texas, College Station. Prentire-Hnll, Inc., Enqlewood Cliffs, New Jersey, 1963. riii 506 pp. Figs. and tables. 16 X 23.5 rm. $11.25.
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The application of high speed computers for making mutiromp
