CONTENTS. 



No. 1, February, 1912. 



Freer, Paul C. The result of the past two years' work in the study 



of tropical sunlight 1 



Crowell, B. C. Mucocele and diverticulum of the vermiform ap- 

 pendix of inflammatory origin .i 29 



Plates I and II. 



Chamberlain, Weston P., Vedder, Edward B., and Williams, Robert 



R. A third contribution to the etiology of beriberi 39 



Walker, Ernest Linwood. The schizogony of Trypanosoma evansi 



in the spleen of the vertebrate host 53 



Plate I. 



Review „ 65 



No. 2, April, 1912. 

 Frontispiece. 



Andrews, Vernon L. Infantile beriberi 67 



Plates I to in. 



Gibbs, H. D. A study of the effect of tropical sunlight upon men, 

 monkeys, and rabbits and a discussion of the proper clothing 

 for the tropical climate 91 



Plates I and II. 



Heiser, Victor G. Typhoid fever in the Philippine Islands from 



the sanitary standpoint 115 



Fox, Carroll. Some common Siphonaptera of the Philippine Is- 

 lands 119 



Reviews 123 



No. 3, June, 1912. 



Strong, Richard P. Studies on pneumonic plague and plague im- 

 munization. I. Introduction. The expedition to Manchuria 

 and the conditions under which the work was performed there.... 129 



Strong, Richard P., and Teague, Oscar. II. The method of trans- 

 mission of the infection in pneumonic plague and manner of 

 spread of the disease during the epidemic 137 



Teague, Oscar, and Barber, M. A. III. Influence of atmospheric 



temperature upon the spread of pneumonic plague 157 



115283 5 iii 



