CONTENTS vil 
PAGE 
The Turning of the Embryo and the Embryonic Flexures 133 
Il. Origin or THE Empryronic MEMBRANES. . . . . . 185 
Origin of the Amnion and Chorion. . . . .  «  TB9 
The Y olk-sac Sea eee eee GAS ale, oud, aS 
Origin of the Wllarines mn & . 1438 
Summary oj Later History oj He Binbr Yonic Me eae anes. 145 
fie (Rum NERVOUS SYSTEM . 9. «2 «= « 5 «2 «14% 
The Brain : 147 
The Neural Gres oe the Coe We cine Garona 156 
IV. Tue OrGANS oF SpeciAL SENSE (Ey, Ear, NOSE) 5 alo! 
Meshes We os. <7 wl. OA ee ee Oe 
The Auditory Sac a, So teh oo eee ges. OS 
The Nose (Olfactory Pits) tp Paty ity 28 oY a. ota eee el OD 
V. Tue ALIMENTARY CANAL AND ITS aeae ES med en 0, 
The Stomodeum .. Bo be ee ole ase Flite 
The Pharynx and V sheet ieahes Ag Pie a weg ie ee te alee 
(Esophagus and Stomach a ee aes, A, ole Lee 
ipowivberge. 2-66 ye © ee ce alle ce ee aes bin’, 
The Pancreas rere Sarr, 9M a ME Pay | 
Pee NageGl fs. on | ms ee Gee eee ee Ee OL 
Anal Plate, Hind-qut, Post-anal gut and Allantois 182 
VI. History oF THE MESODERM ee ee eo 
Somites : PO ate Ln Pen ae 
The lieeeaediate Cell- GSS 3). Ls ee, at LOU 
The Vascular System aso se ih gata © aR - on 
VII. Tue Bopy-caviITy AND Teo eee FR ie ee RA ene LO 
PART. It 
THE FOURTH DAY TO HATCHING, ORGANOGENY, 
DEVELOPMENT OF THE ORGANS 
CHAPTER VII: THE EXTERNAL FORM OF THE EM- 
BRYO AND THE EMBRYONIC MEMBRANES 211 
I. Tue ExTerRNAL Form Pr ee es et en) oe ma 
Genicraie 92, a. &, 00S Pe, Seats Oe cea ee a eee Oa eee tee 
Head i jm Ape ote MO ee PR A th ZS. 
II. Embryonic NiGueerns A Oe Bae, ) CS age a we 
Concrie COU, CE a) ees es ee 7s, SO 
The Allantois ae ee es fe Sek ae ee 0, 
The Y olk-sac yn i a 
ThevAmnion 24 nanan cee Tee ee Ber OL 
Hatching 232 
