ERRATA 



P. 27, 1. 15 : for revolves read resolves. 



P. 29, 1. 9 : for nucleo-proteids read nucleo-albumins. 



P. 44, 1. 25 : for Zimmerman read Zimmermann. 



P. 76, 1. I : for mable-fibres read mantle-fibres. 



P. 78, lyio: for '72 read '82. 



P. 130, second line from bottom: for OZdigonium read CEdogonium. 



P. 1 60, in explanation of cut: for Pibularia read Pilularia. 



2 : for Brogniard read Brongniart. 



21 : for four read eight; 1. 22 : for eight read four. 



21 : for dermids read desmids. 

 . 2 : for 69 read 24. 

 . 7 : /or 92, A read 92, B. 



.16: for Strongylocentrotus read Sphaer echinus. 

 . I : for QEdigonium read CEdogonium, 

 . 3 : add and by Herlitzka ('95) in Triton. 



31 : for Camptocanthus read Canthocamptus. 



P. 162, 

 P. 196, 



P. 199, 

 P. 218, 



P. 222, 

 P. 235, 

 P. 2 5 2, 

 P. 309, 

 P. 348, 



P- 353. 1- 9 ' for XXXVII. read XXVII. 



ADDENDA 



(The following notes refer to an Appendix, inserted after p. 357, in which are contained 

 various addenda and critical notes. Most of these refer to works that have appeared since 

 the first part of this edition was issued.) 



P. 15. Double centrosomes in resting cells. Note I. 



P. 1 6. Continuity of linin-network and cyto-reticulum. Note 2. 



P. 19. Protoplasmic structure. Note 3. 



P. 27, 1. i. Size-relations of nucleus and cytoplasm. Note 4. 



P. 27, 1. 33. Chromatin-granules. Note 5. 



P. 40. Position of centrosome in epithelial cells. Note 6. 



P. 43. Protoplasmic continuity. Note 7. 



P. 44. Add to Literature List, A. Zimmermann : Die Morphologic und Physiologic 

 des Pflanzlichen Zellkernes; Jena, Fischer, 1896. 



P. 53. Origin of the mitotic figure. Note 8. 



P. 82. Connections between attraction-spheres. Note 9. 



P. 112. Nutrition of the ovum. Note 10. 



P. 126. Formation of the spermatozoon. Note n. 



P. 156. Van Beneden's .views on the centrosome in fertilization. Note 12. 



P. 159. Lillie on the centrosomes in Unio. Note 13. 



P. 159. Hertwig on unfertilized sea-urchin eggs. Note 14. 



P. 192. Reduction in vertebrates. Note 15. 



P. 192. Origin and meaning of tetrads. Note 16. 



P. 194. Reduction in vertebrates. Note 17. 



P. 197. Tetrads in ferns. Note 18. 



P. 199. Reduction in diatoms. Note 19. 



P. 200. Reduction in insects. Note 20. 



P. 226. Doubts regarding genetic continuity of the centrosome. Note 21. 



P. 228. Centrosome in echinoderms. Note 22. 



P. 240. Chemistry of nucleic acid. Note 23. 



P. 256. Ingestion of food -granules by nucleus. Note 24 



P. 278. Laws of cleavage. Note 25. 



P. 292. Chemical stimuli to cell-division. Note 26. 



P. 313. Hertwig's theory of development. Note 27. 



P. 329. Regeneration of the lens. Note 28. 



M' 



