Talk:Book - Outlines of Chordate Development 4

INTRODUCTION

I. THE EGG AND ITS PRODUCTION

1. The Egg

2. The Reproductive Organs of the Fowl

3. The Formation of the Egg and its Early Development

A. The History of the Ovarian Ovum to Ovulation

B. The Period from Ovulation through Fertilization

C. From the Beginning of Cleavage to the Time of Laying 241

D. Gastrulation . . 248

II. THE FORMATION OF THE EMBRYO 251

III. THE EARLY DEVELOPMENT OF THE EMBRYO .... 260

1. The Head-fold . . . 260

2. Mesoderm 262

3. Endoderm 267

4. The Nervous System 269

5. The Vascular System 271

IV. THE EMBRYO OF ABOUT THIRTY HOURS (10-12 PAIRS OF SOMITES) 275

V. THE SEPARATION OF THE EMBRYO FROM THE EXTRAEMBRYONIC STRUCTURES 279

VI. THE ESTABLISHMENT OF THE EXTERNAL FORM OF THE EMBRYO 282

VII. THE EMBRYONIC MEMBRANES AND APPENDAGES . . 286

1. The Yolk-sac 286

2. The Amnion 292

3. The Allantois 295