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NEW McGRAW-HILL BOOKS 



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PRECISION OF MEASUREMENTS AND 

 GRAPHICAL METHODS 



By H. M. Goodwin, Ph.D., Professor of Physics, Massachusetts Institute of 

 Technology. 104 pages, 6x9. $1.25 (6/3) net, postpaid. 



This textbook is designed for a brief course, correlating closely the class room 

 and laboratory work. Part I discusses Classification of Measurements, Pre- 

 cision Discussion of Direct Measurements, Deviation and Precision Measures, 

 Weights and Weighted Mean, Criterion for Rejecting Observations, Com- 

 putation Rules and Significant Figures, Precision Discussion of Indirect 

 Measurements. Part II, Graphical Methods, contains specific directions for 

 constructing graphs and general directions for obtaining the functional relation- 

 ship between two variables. Part III contains the solution of a few illus- 

 trative problems together with 79 questions and problems for class use. The 

 appendix gives several useful tables. 



Palmer— THE THEORY OF MEASUREMENTS 



By A. DE Forest Palmek, Ph.D., Assoc. Prof, of Physics, Brown Univ. 

 248 pp. Illus. $2.50 (10/6) net, postpaid. A discussion of principles and 

 methods. 



Nortbrup— METHODS OF MEASURING ELECTRICAL RESIS- 

 TANCE 



By Edwin F. Nokthrup, Ph.D. 389 pp. Illus. $4.00 (17s) net, postpaid. 

 An authoritative treatise describing methods, simple measurements, details of 

 instruments, etc. 



THE INTERNATIONAL CHEHICAL SERIES 



HENRY P. TALBOT, Ph.D., Consulting Editor 



The first volumes in this series have had a gratifying reception. They have 

 been approved and adopted by several institutions. 



Norris—THE PRINCIPLES OF ORGANIC CHEMISTRY 



By James F. Norris, Ph.D. Professor of Chemistry, Simmons College, Boston. 

 570 pp.,5|x8. Illustrated. $2.50 (10/6) net, postpaid. 



Cady— INORGANIC CHEMISTRY 



By Hamilton Perkins Cady, A.B., Ph.D. Professor of Chemistry, Univer- 

 sity of Kansas. 629 pp., 5ix8. Illustrated. $2.50 (10/6) net, postpaid. 



STUDY OF MINERALS PETROQRAPHIC METHODS 



A Combined Text Book and Pocket Manual By E. WeINSCHENK, Trans, by ROBT. W. 



By Austin Flint Rogers, Ph.D., Assoc. Prof., Claek, Instructor in Petrography, Univ. of 



Leland Stanford Univ. 522pp. 5x7}. Flex- Michigan. 396pp. 371 Illus. $3.50 (159 ) net, 



ible leather. $3.50 (15s) net, postpaid. postpaid. 



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