CONTENTS. xvii 



PAGE 



CHAPTER XXXVIII. 



DEVELOPMENT OF THE SIMPLE TISSUES. 



BY S. STRICKER. 



Structure of Ovum ........ 504 



Disappearance of Original Nucleus ...... 504 



Nuclear Cavity 505 



Appearance of Second Nucleus 505 



Amoeboid Movements of Germ 505 



Process of Cleavage in Batrachian Ovum 506 



Baer's " Cleavage Cavity " 507 



Rusconi's Fissure . , , . . . . . . 5C9 



Ecker's " Vitelline Plug" 509 



Laminae of the Germ ........ 510 



Process of Development in Ovum of Fowl . . . . 517 



Method of Research by Imbedding 519 



Process of Cleavage in Ovum of Bird ..... 520 



Historical Facts in Embryology ...... 522 



Account given by Wolff . .. . . . 522T 



,, by Pander 523 



by v. Baer 523 



,, ,, by Reichert ..... 524 



,, byRemak. 524 



by His 525 



,, by Hensen . . . . 525 



by Dursy 525 



byWaldeyer . . . . . 526 



Formation of Laminae in Ovum of Bird . . . . ' . 526 



of Fish 530 



,, ,, of Mammal .... 533 

 Morphological Value of the Germinal Laminae . . . .535 



Development of the Simple Tissues 538 



Development of the Blood 539 



Structure of Transversely Striated Muscle .... 543 



Size of Fibres 544 



Sarcolemma ........ 544 



Muscle Corpuscles ....... 544 



Fibrillae 544 



Bowman's Sarcous Elements 545 



