SCIENCE-ADVERTISEMENTS 



The University of California Press 



BeTkele]', Caltfornla 2^0 Madlsoo Avenqe, Nen York 



Variability in Soils and its Sigfnificance to 

 Past and Fotore Investigations. IL Varia- 

 tions in Nitrogen and Carbon in Field 

 Soils and their Relation to the Accuracy 

 of Field Trials. 



By D. D. Waynick and L. T. Sharp .... 3 .20 



Nabaloi Songs. By C. R. Moss and A. L. 



Kroeber 20 



A Cestraciont Spine from the Middle Triassic of 



Nevada. By Pirie Davidson 05 



The Pteropod Desmopterus Pacificus (Sp. Nov.). 



By Christine Esseneerg 05 



Studies on Giardia Microti. By William C. 



Boeck 60 



The above titles represent University of California 

 Publications in Agricultural Sciences, American Archae- 

 ology and Ethnology, Geology and Zoology. Other 

 series published by the University of California in- 

 clude: Botany, Entomology, Geography, Pathology, 

 Physiology and Psychology. 



Complete Lists of Titles and Prices will be sent 

 on Request 



Ready in the Early Summer 

 Notes on Qualitative Analysis 



By L. A. TEST, Professor of General Chemis- 

 try, Purdue University, and H. M. MC- 

 LAUGHLIN, Instructor in Chemistry, Iowa 

 State University. 



A brief course in qualitative analysis 

 for the last half of the first-year or 

 for second-year college chemistr}'. 

 The subject is taken up entirely from 

 the standpoint of the Ionic Theory 

 and Mass Law without going ex- 

 haustively into either. The prelim- 

 inary laboratory experiments have 

 been cut to a minimum, and only 

 the important ions are included. 

 The questions at the end of the 

 book give a thorough drill in the 

 principles and methods of separa- 

 tion. 



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