CONTENTS 



JANUARY, 1917 



H. L. WiEMAN. The chromosomes of human spermatocytes. Fom* plates 1 



S. Hatm. Changes in the composition of the entire body of the albino rat during the 



life span. One chart 2.3 



Franklin Pearce Reagan. P^xperimental studies on the origin of vascular endothelium 



and of erythrocytes. Eighty-nine figures 39 



MARCH, 1917 



John C. Koch. The laws of Ijone architecture. Twenty-eight figures and five plates. ... 177 

 George L. Streeter. The development of the Scala tj'mpani, Scala vestibuli and 



perioticular cistern in the human embryo. Nine figures 299 



C. jNI. Jackson. Effects of inanition and refeeding upon the growth and structure of the 



hypophysis in the albino rat. Five figures 321 



MAY, 1917 



Arthur William Meyer. Studies on hemal nodes. VI. Hemal nodes in bovines and 



goats. One figure 359 



Arthur William Meyer. Studies of hemal nodes. VII. The development and function 



of hemal nodes. Fifteen figures 375 



Vera Daxchakoff. The position of the respii-atorj- vascular net in the allantois of the 



chick. One plate 407 



Eliot R. Clark and Eleanor Linton Clark. A study of the reaction of lymphatic 

 endothelium and of leucocytes, in the tad-pole's tail, toward injected fat. Nine 

 figures 421 



Stanhope Bayxe-Jones. The blood-vessels of the heart valves. Six text figures and 



one plate 449 



J. Due.sberg. Chondriosomes in the cells of fish eml)ryos. Eight figures 4G5 



