( i33 ) 



TABLE II. 



Review of tlie Constituent Parts of the One-celled Germ .organism, before 



and after fertilization. 



Cf. the works of Eduard Strasbarger (" Ueber Zellbildung, Zelltheilung 

 md Befriichtung," 2ad Edition ; Jena, 1876) ; of Oscar Hertwig (" Beitriige 

 &ur Kentniss der Bildung, Befruchtung, and Theilung des Thierischen Eies;" 

 1875) ; of Leopold Auerbach ("Organologische Studien ;" 1874) ; and of Otto 

 Biitschli (" Studien iiber die ersten Entwickelungs-Vorgange der Eizelle," 

 etc.; 1876) 



54 



I. The Fertilizing Male, 

 or Paternal Sexual 

 CeU. 



The Sperm-cell. 



Spermule. 

 Syn. Thread - cell. 

 Seed-animalcule. Sper- 

 matozoa. Zoosperm. 

 Fig. 17, p. 173. 



II. The Fertilized Female, 

 or Maternal Sexual 

 Cell. 



III. The New Cell, the 

 product of the Concre- 

 scence of I. and II. 



Constituent Parts. 

 I. A. Protoplasm of the 

 Sperm-ceU. 



(Spermopla^ma.) 

 The central portion 

 and the tail of the seed- 

 thread, together with 

 the outer sheath of the 

 "head." 



I. B. Kernel (nucleus) 

 of the Sperm-cell. 



(Sperniococcus.) 

 Sijenu kernel (Hert- 

 wig). "Head of the 

 Bperm-animal" (with 

 the exception of the 

 thiu outer sheath). 



Constituent Parts. 

 II. A. Protoplasm of the 

 Egg-cell. 



(Ovoplaswa.) 

 Yelk, egg-yelk, Lecy- 

 thus, vitellus. 



II. B. Kernel (nucleus) 



of the Egg-cell. 

 (Ovococcus.) 



Germ -vesicle, or Pur- 

 kinje's vesicle (Vesicula 

 Germinativa), contain- 

 ing the germ-spot 

 (Macula Germinativa), 

 or the nucleolus, which, 

 according to Hertwig, 

 becomes the egg-kemel. 



Constituent Parts. 

 III. A. Protoplasm of 

 Parent-cell: Cleavage- 

 yelk. 



(Cytuloplasma.) 

 Protoplasm of the 

 first cleavage - globule 

 (the product of the 

 amalgamation of I. A. 

 and II. A. 



III. B. Kernel (nucleus) 

 of the Parent-cell. 



(Cytulococcvs.) 

 Cleavage-kernel (Hert- 

 wig). Germ - kernel 

 (Strasburger). Kernel 

 of the first cleavage- 

 globule (product of the 

 amalgamation of the 

 sperm. kernel and the 

 egg-kernel ?).** 



