ANALYTICAL INDEX 



SUPPLEMENTARY VOLUME. 



Ovum (in Animal Anatomy and Physiology), 1. (See also 

 (Jencratioii). 



I. of the ovum in general as related to the sexual 



process of generation, 3. 

 definition, 3. 

 ovulation, 3. 

 the chorion, 3. 



the spermatic substance or sperm, 3. 

 the embryo-cell, 4. 

 development, or embryo-genesis, 4. 

 structural distinctive characters of an ovum, 5. 



II. of the non-sexual mode of peneration, ft. 



1. of the process of reproduction iu protozoa, or 

 animals in which the sexual distinction has not 

 yet been discovered, 6. 



Gregarina?, 7. 



2. of the possibility of primary, direct, or non- 

 parental production of animals, or of so-called 

 spontaneous and equivocal generation, 9. 



Entozoa, 11. 



3. production of dissimilar individuals among 

 sexual animals by a non-sexual process : so- 

 called alternate generations, 12. 



embryological development, 12. 

 metamorphoses, 12. 

 metagenesis, 13. 38. 

 larva, 13. 



Echinodermata, 14, 

 Polypina, 16. 

 Acalephae, 20. 

 Mollusca, 22. 

 Salpidae, 23. 

 Entozoa, 24. 



Cystic Entozoa, 25. 

 free tapeworms, 27. 

 Trematoda, 29. 

 Annelida, 32. 

 Insecta: Aphides. 33. 



general remarks on alternate generations, 13. 

 34. 



the " nurse" of Steenstrup, 37. 

 parthenogenesis, 37. 

 additional remarks, 4". 



of the ovum previous to the commencement of foetal 

 development, 43. 



I. anatomical structure, chemical composition, 

 origin and formation, of the ovum in Vertebrate 

 Animals. 43. 



$ 1. preliminary and general comparison of 

 the ova of animals, 43. 

 general facts ascertained in regard to the 



ova of animals, 45 



division of ova of animals into groups, 46. 

 first group, 4f,. 

 second group, 46. 

 tliird group, 47. 



2. further comparison of the ova of an ; mals 

 in general, as respects their size, number, 

 form, and the relation of their parts, 48. 

 size of ova, 48. 

 number of ova, 49. 



external form and relation of the parts, 50. 

 in Birds, 50. 



in oviparous scaly Reptiles, 50. 

 in oviparous cartilaginous Fishes, 50. 

 in the Frog, 51. 

 in Newts, 51. 



3. of the ovary in general as the formative 

 organ for the ova of animals, 52. 



a. relations of the form of the ovaries to 

 the discharge of ova, 54. 



b. structure of the ovaries themselves, as 

 related to the production of ovula, 50. 



Sup p. 



Ovum, anatomical structure, &c. continued. 



4. more detailed description of the ovum 

 of birds as the type of the first group, 60. 

 quantity of matter, composition, &c. 60. 

 structure of the external parts of the egg, 



63. 



the chalazae (grandines). 64. 

 formation of the external or accessory 



parts of the bird's egg, 65. 

 ovarian ovum of birds ; ovulum ; yolk and 



its contents, 68. 



microscopic structure of the ovum, 71. 

 early condition and first formation of the 



ovarian ovum in birds, 74. 

 morphology of the bird's egg, as ascer- 

 tained from its first origin and develop- 

 ment, 75. 



5. more detailed description of ova belonging 

 to the second group, or with small granular 

 yolk and complete segmentation, 80. 

 ovum of mammalia and of the human species, 

 [81]. 



uniformity in size, &c. [81]. 

 Graafian follicles, [81]. 

 tunica or membrana granulosa, [R2]. 

 external tunic, or zona pellucida, [82]. 

 chorion, [84]. 



contents of the ovum, or parts within the 

 zona, [86]. 



the yolk-mass, [86]. 

 the germinal vesicle, [87]. 

 the macula or nucleus, [*7]. 

 manner in which the ova of mammalia 



may be procured, [88]. 

 origin and formation ot the mammiferous 

 ovum, [89]. 



formation of the ovules, [89], 

 origin of the Graafian follicles, [89]. 

 formatioD of the cumulus, [9(>]. 

 similarity of the structure of the ovum 

 throughout the families of the class 

 Mammalia, [90]. 



except in the Monotremata, [90]. 

 ova of the Ornithorhynchus, [91 J. 

 ova of Echidna hystrfx, [91]. 

 third group of the ova of "Vertebrate Animals, 

 [91]. 

 Amphibia Batrachi.i, [91]. 



structure of the ripe ovarian ovum in 



Amphibia ['.'2] 

 germinal vesicle [f'3J. 

 yolk-substance. [93]. 

 formation of the ovum, and changes 



in its progress, [94]. 

 Osseous Fishes. [98]. 

 II. Invertebrate Animals, [104]. 



l;irge-\oked ova with partial cleavage, 

 [105]. 



Cephalopoda, [105]. 

 Gasteropoda, [106]. 



Acephal i, [10*], 

 Arthropoda. [110]. 

 In.-ecta, [110]. " 

 Arachnida, [114]. 

 Crustacea, [115]. 

 Annulata, [1 17]. 

 Kotifera, [118]. 

 Turbellaria, [119]. 

 Entozoa, [120]. 



Nematoidea, [120]. 

 Trematoda. [Iv4]. 

 Cestoidea, [I '24]. 

 Echinodermata, [125]. 

 13 B 



