should he mast ati is factory for use in classes whose memhers have had a p r e vious introduction to chemistry. W. NORTON JONES. JR. M c i M m n ~COLLEGE ABILEBE,T I X * 8
BIBLIOGRAPHY OF POLAROGRAPHIC LITERATURE, 1922-1955 Compiled and published by E. H. Sargent & Co., 1956. 192 pp. 28 X 21.5 cm. Paper bound. $5. THIS bibliography aill he of great v a l w to workers in the field. The 6815 entries cite authors, titles, literature reference, m d often the Chemical Abstraels reference. Somo edit,orial notes have been added when thc tit,lo does not clearly imply tho coverage of the paper. An extensive subject, index should make the book n first source of information for any r h o contemplate the use of this important analyticel tool as a research aid. R.
F. I
