GENERAL INDEX. 



833 



OVUM continued. 



of the ovum previous to the commencement of foetal 



development, s. 43. 



anatomical structure, chemical composition, origin, 

 and formation of the ovum in man and animals, 



s. 4:3. 



^ 1. preliminary and general comparison of 



the ova of animals, s. 43. 

 general facts ascertained in regard to the 



ova of animals, s. 45. 

 division of the ova into groups, s. 46. 

 first group, s. 46. 

 second group, s. 46. 

 third group, s. 47. 



$ 2. further comparison of the ova of animals 

 in general, as respects their size, num- 

 ber, form, and the relation of their 

 parts, s. 48. 

 size of ova, s. 48. 

 number ot ova, s. 49. 

 external form and relation of the parts, 



s. 50. 



in Birds, s. 53. 



in oviparous Scaly Rfptilcs, s.50. 

 in oviparous Cartilaginous fishes, s. 



50. 



in the Frog, s. 51. 

 in Newts, s. 51, 



3. of the ovary in general as the forma- 

 tive organ for the ova, s. 52.547. 

 a. relations of the form of the ovaries to 



tile discharge of ova, s 54. 

 6. structure of the ovaries themselves, as 

 related to the production of the 

 ovula, s. 56. 



4. more detailed description of the ovum 

 ofliirds,as the typeot' the first group, 

 s GO. 

 quantity of matter, composition, &c., s. 



60. 

 structure of the external parts of the 



egg, s.63. 



the ehalazie (grandines), 64. 

 formation of the external or accessory 



parts of the bird's egg, s. t>5. 

 ovarian ovum of Birds ; ovu.um ; yolk 



and its contents, s. 6S. 

 micro^'opic structure of the ovum, s. 



71. 

 yellow or external yolk substance, 



s. 71. 

 substance of the cavity and canal, 



s. 72. 

 cicatricula, or germinal disc, and 



cumulus, s. 73. 

 vitelline membrane-, s. 73. [9-1]. 



[90]. 

 early condition and first formation of 



the ovarian ovum in birds, s. 74. 

 morphology of the bird's egg, as 

 ascertained from its first origin and 

 development, s. 75. 



$ 5. more detailed description of ova be- 

 longing to the second group, or with 

 small granular yolk and complete seg- 

 mentation,?. 80. 

 ovum of Mammalia and of the human species, 



s. [81]. 



uniformity in size, &c., s. [81], 

 Graarian follicles, s. [81]. 

 tunica or membrana granulosa, s. [82]. 

 external tunic, or zona pelluciiia, s. [S2], 

 chorion, ii. 453; s. [84]. 

 contents of the ovum, or parts within the 



zona, s. [86]. 

 the yolk-mass, s. [86]. 

 the germinal vesicle, s. [87]. 

 the macula or nucleus, s. [S7]> 

 manner in which the ova of Mammalia 



may be procured, s. [8SJ. 

 origin and formation of the mammiferous 



ovum, s. [89]. 



formation of the ovules, s. [89]. 

 origin of the Graalian follicles, s. [89]. 

 formation of the cumulus-., s. [90]. 

 similarity of the structure of the ovum 

 throughout the families of the class 

 Mammalia, s. [HO]. 

 except in the Monotremata, s. [90]. 

 ova of the Ornithorhynchus, s. [91]. 

 ova of Echidna hystrix, s. [91]. 

 third group of the ova of Vertebrate Animals, 



s. [ 91]. 

 Amphibia Batrachia, s. [91]. 



structure of the ripe ovarian ovum in 



Amphibia, s. f9J] 

 embryonic development, s, [93]. 

 yolk substance, s. [93]. 

 germinal vesicle, s. [93]. 

 vitelline membrane, s. [9-1]. 

 formation of the ovum and changes in 

 its progress, s. [94J. 



OVUM, Vertebrate Animals continued 



Osseous Fishes, s. [98], 



structure of ovarian ovum, s. ['8]. 



yolk-substanre, s. [99]. 



germinal vesicle s. [99]. 



membranes, s. [' II]. 



micropyle, s. [101] [103]. 

 development, s. [lo:>J, [1U4J. 

 Invertebrate Animals, s. [104]. 



large-yoked ova with partial cleavage, s. 



[105]. 



Cephalopoda, s. [105]. 

 Gasteropoda, s. [Kill] 



Acephala, s. [108]. J 

 Arthropoda, s. [110]. 

 Insecta, s. [110J. 

 Arachnida, s. [114]. 

 Crustacea, s. [115 _'. 

 Annulata, s. [1171. 

 Kolifera, s. [IISJ? 

 Turb'-llaria, s. [119]. 

 Entozoa, s. [120.] 



Nematoidea, s, [120] 



Trematoda, s. ["124J.] 



Cestoidea, s. [1*4]. 

 Echinodermata, s. [125]. 

 Polypina, s. [126J. 

 Acalephae, s. [ii.'9j. 

 Protozoa, s.[12'J]. 

 Porifera, s. [129]. 

 Recapitulation and conclusion, s. [130]. 



1. definition of the ovum, as related to its own 



structure, and its history in connexion wilh 

 the reproduction of the species, s. [130], 



2. recapitulation of the most general facts ascer- 



tained by the comparison of the ova of dif- 

 ferent animals, s. [132]. 



3. morphology of the ovum : homology of its parts, 



and relation of the ovum to other organic 

 structures, s. [134]. 



4. phenomena attendant on the maturation of the 



ovum, and its discharge from the ovary, ii. 

 453 ; s. [136]. 



time at which it arrives in the uterus, ii. 

 453. 

 irregularities in the descent of the, into the 



uterus, ii. 455. 

 changes which the ovum undergoes in the 



Fallopian tube, s. li(>9. 

 functions of Fallopian tube, 



reception and transmission of ova by the 

 Fallopian tube, s. 605. 



5. relation of the ovum to fecundation by the male 



sperm, s. [136]. 



6. immediate effects of fecundation on the ovum : 



segmentation, and first changes of the ovum 

 related to the commencement of embryonic de- 

 velopment, s. [138]. 

 difference between the fecundated and unfecun- 



daled ovum, ii. 462. 

 phenomena of fecundation, ii. 457 467. 



is material contact of the semen and ovum 



necessary for fecundation ? )i. 162. 

 nature of the fecundating principle hypo- 

 thesis of an aura, &c., ii 466. 



chemical composition of the ova of annuals, s. [141]. 

 the albumen or white, s. [141]. 



vitelline, s. [141]. 

 ichthine, s. [14IJ. 

 ichthiuine, s. [141]. ' 

 ichthuline, s. [14)]. 

 cohesion of germs, cases of, ii. 317. 

 dormant vitality of eggs, iii. 1.36. 

 periods of emission of ova of human females, s. 553. 

 spontaneity of the emission of ova, s. .067. 

 congenital malformations of the, iv. 9-16. 



mob hotryoides, or hydatica, hydrometraaquatica, 



iv. 946. 

 theory of the fusion of ova in cases of monstrosity, 



iv. 97 2 976. 

 intus-susception of one germ within another, cases 



of, ii. 317. 



ova subvcntanca, ii. 455. 

 Owls, eyelids of, iii. 97. 



(Jjc, anatomical characters of the, s. 503, et scq. 

 cranium of, s. 509. 513. 

 muscles of the, s. 524, 525. 



effect of castration on the growth of the horn?, ii. 718. 

 pelvis of the, s. 157, 158. 

 root of the ninth nerve in the, iii. 722. 

 urine of the, iv. 1280. 

 variation in the breeds of, under various circumstances, 



iv. 1311. 

 Ox gall, atialyM's of, i. 574, 375. 



uses of, i. 376. 

 Oxalale of lime calculus, iv. 78. 



in morbid concretions, analysis of, iii. SOG. 

 deposit of, in urine in disease, iv. KS3. 

 Oxalic acid, iii. 800. 



method of determining the presence of, iii. SOO. 

 syncope from, i. 7!'7. 

 Oxides in aninrils and vegetables, i. 125. 



