XIV TABLE OF CONTENTS. 



Practical directions for obtaining and studying chick embryos, 437 

 — 460. Examination of a 36 — 48 hours embryo, 437 — 444. Of an 

 embryo of about 48 — 50 hours, 444 — 447. Of an embryo at the end 

 of the 3rd day, 447 — 451. Of an embryo of the 4th day, 451 — 453. 

 Of a blastoderm of 10 hours, 453 — 456. Of an uuincubated blasto- 

 derm, 457. Of the process of segmentation, 458. Of the later changes 

 of the embryo, 459. Of the development of blood-vessels, 459, 460. 



Practical directions for obtaining and studying Mammalian em- 

 bryos, ^6o — 471. Animals and breeding, 460, 461. Examination and 

 treatment of segmenting ova, 461 — 464. Of the blastodermic vesicle, 

 72 — 90 hours, 465. Of the blastodermic vesicle of 7 days, 465, 466. 

 Of an 8 days embryo, 466 — 468. Of an embryo of 8 days 1 2 hours, 

 468, 469. Of the foetal membranes of an embryo of 14 days, 469, 

 470. 



Note A. Automatic microtome, 471. 



Note B. New method of mounting sections, 471. 



