SCIENCE— ADVERTISEMENTS 



The University of California Press 



Berkley. California 



I Avenue, New York 



Studies on the Adaptation of Man to 



High Altitudes 



By EDWARD SIGFRID SUNDSTROEM 



I. Effect of High Altitudes on Pulse, Body Tempera- 

 ture, Blood Pressure, Respiration Rate, Output 



of Urine, and Loss of Energy in Feces lo 



II. Effect of High Altitudes on Protein Metabolism . .20 



III. Effects of High Altitudes on the Iron Metabolism .10 



IV. Effect of High Altitudes on the Carbon Dioxide 



Content and on the Hydrogen Ion Concentration 



of the Blood 10 



V. Effect of High Altitudes on Salt Metabolism with 

 Special Reference to the Mechanism of Main- 

 taining the Acid-base Equilibrium of Body 10 



VI, Effect of High Altitudes on the Number of Erythro- 

 cytes 15 



VII. Effect of High Altitudes on the Size of the Ery- 

 throcytes 10 



VIII. Effect of High Altitudes on the Morphology of 



Red and White Blood Corpuscles 10 



The University of California Publications deal with 

 various lines of scientific investigations: Agricultural 

 Sciences, American Archaeology and Ethnology, Bot- 

 any, Economics, Education, Entomology, Geography, 

 Geology, History, Pathology, Philology, Philosophy, 

 Physiology, Psychology, and Zoology. 



Complete Lists of Titles and Prices will be sent 

 on Request 



Elementary Biology 



An Introduction to the Science 

 of Life 



By BENJAMIN CHARLES GRUENBERG 



Head of the Biology Department, Julia Richman 

 High School, New York 



Jast Published 



Man's conquest of his surroundings 

 through the application of more and 

 more trustworthy knowledge is the 

 leading motive of the book. 



Written particularly for the first or 

 second year of the high school, or for 

 any high school grade, the stj'le and 

 character of the book nevertheless 

 fit it for a variety of uses. It furn- 

 ishes a sound basis for later studies in 

 agriculture, psychology, or in any 

 specialized branch of biology. 



Ginn and Company 



Bolton New York Chicago London 



Spencer Microscopes 



Are now supplied with our NEW 4 Millimeter 

 OBJECTIVE made from a new formula from optical 

 glass made in our own factory. This objective not only 

 gives superb definition but has a 



Long Working Distance 



nearly twice that of the old objectives of equal magni- 

 fication. 



Now that we are released from war work, we are 

 again in position to give to our customers the prompt 

 service which has characterized our business in former 

 days. 



SPENCER LENS COMPANY 



BUFFALO, N. Y. 



