XIV INDEX OF THE ILLUSTRATIONS. 



Red corpuscles of embryo of fowl, 670 diara. - - Plate ix. Fig. 1 



The same, in water, 670 diam. - - ix. 2 



Red corpuscles of adult fowl, 670 diam. - ix. 3 



The same of young frog, 670 diam. - - ix. 4 



The same of the adult frog, 670 diam. - - - ix. 5 



The same united into chains, 670 diam. ix. 6 



DEVELOPMENT OF EMBRYO OF CHICK. 



The cicatricula prior to incubation . - - - x. 1 



The same at the end of first day of incubation - x. 2 



The same at the thirty-sixth hour - - - x. 3 



The same at the close of the second day - - x. 4 



The same at the end of the third day - - - x. 5 



The embryo on the conclusion of the fourth day - x. 6 



The same at the termination of the fifth day - - x. 7 



The embryo of six days old - - - - x. 8 



The embryo of the ninth day of development - - x. 9 



The same at the end of the seventh day, detached - x. 10 



Ditto at the end of the ninth day, also detached - x. 11 



MUCUS. 



Corpuscles of, in their ordinary condition, 670 diam. - xi. 1 



The same collapsed, 670 diam. - - - xi. 2 



The same, showing the action of water, 670 diam. - xi. 3 



The same acted on by dilute acetic acid, 670 diam. - xi. 4 

 The same after the action of undilute acetic acid, 670 



diam. - - - - - - xi. 5 



The same in process of development, 670 diam. - xi. 6 



Vaginal mucus, 670 diam. - - - - xn. 1 



.ZEsophageal mucus, 670 diam. - - - - xn. 2 



Bronchitic ditto, 670 diam. - - - - xn. 3 



Vegetation in mucus, 670 diam. - - - xn. 4 



Mucus of stomach, 670 diam. - - xn. 5 



Vaginal tricho-monas - - - - xn. 6 



PUS. 



Corpuscles of laudable pus, 670 diam. - - xm. 1 



The same acted on by acetic acid, 670 diam. - - xui. 2 



The same treated with water, 670 diam. - xm. 3 



Epithelial scales from pustule, 670 diam. - xin. 4 



Corpuscles from scrofulous abscess, 670 diam. - - xm. 5 



Vibrios in venereal pus, 670 diam. - - xm. 6 



