( ««3 ) 



TABLE II. 



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



and after fertilization. 



Cf. the works of Eduard Strasbnrger (" Ueber Zellbildung, Zelltheilnng 

 ind Befruchtnng," 2nd Edition ; Jena, 1876) ; of Oscar Hertwig (" Beitrage 

 zur Kentniss der Bildung, Befruchtnng, und Theilung des Thierischen Eies;" 

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

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

 Ma\; 1876) . M 



I. The Fertilizing Male, 

 or Paternal Sexual 

 Cell. 



The Sperm-cell. 

 Spermule. 

 Syn. Thread - cell. 

 Seed-animalcule. Sper- 

 matozoa. Zoosperm. 

 Fig. 17, p. 173. 



Constituent Parts. 

 I. A. Protoplasm o^ the 

 Sperm-cell. 



(Spermoplasma.) 



The central portion 

 and the tail of the seed- 

 thread, together with 

 the outer sheath of the 

 " head." 



I. E. Kernel (nucleus) 

 of the Sperm-cell. 

 (Spermococcus.) 



Sperm -kernel (Hert- 

 wig). " Head of the 

 Bperm-animal " (with 

 the exception of the 

 thin outer gheath). 



II. The Fertilized Female, III. The New Cell, the 



or Maternal 

 Cell. 



Sexual 



Constituent Parts. 

 II. A. Protoplasm of the 

 Egg-cell. 



(Ovoplasma.) 

 Yelk, egg-yelk, Lecy- 

 thus, vitellus. 



II. B. Kernel (nucleus) 

 oi the Egg-cell. 



(Ovococcus.) 

 Germ-vesicle, or Pur- 

 kinje's vesicle (Vesicula 

 Qerminativa), contain- 

 ing the germ-spot 

 (Macula Qerminativa), 

 or the nucleolus, which, 

 aeoording to Hertwig, 

 beoomes the egg-kemel. 



product of the Concre- 

 scence of I. and II. 



Constituent Parts. 

 III. A. Protoplasm of 

 Parent-cell: Cleavage- 

 yelk. 



(Cytulopla8ma.) 

 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 



(Cytulococcus.) 



Cleavage-kernel ( Hert- 

 wig). Germ - kernel 

 (Strasburger). Kernel 

 of the first cleavage- 

 globule (product of the 

 amalgamation of the 

 ■perm. kernel and the 

 egg-kernel ?).** 



