516 



INDEX. 



Birds, centrum of pre-sphenoidal sclero- 

 tome in, 149-154 ; from size of organs 

 of vision, have great development of 

 principal frontal, 156 



Birth, state of teeth at, 23 



Blake, Structure and Formation of Teeth 

 referred to, 21, 33 



Blastema announcing formation of a 

 gland in embryo, 425 



Blastoderma, the first form after com- 

 mencement of development, 73 



Elennius vivipams, Rathke on cartilagi- 

 nous streaks at the basis of head in 

 embryo, 186 



Blumenbach on the enclosure of bullets 

 in ivory, 58 



Bone : how dead or dying bone is sepa- 

 rated from the living structure, 406 ; 

 the structure and economy of, 461-464 



" Bones of Bertin," 158, 163 



Bowman, paper on muscle referred to, 

 389 ; fat deposited in liver, 382, 413 ; 

 on basement membrane, 391 ; paper 

 on the structure and use of the Mal- 

 pighian bodies of the kidney referred 

 to, 391, 428 ; on mucous membrane, 

 396, 428 



Brachyura (Crustacea), organs of gener- 

 ation in, 430, 435 



Brain in Crustacea, its position, 80 ; in 

 insects, annelids, and mollusca, 81 



Bremser, Intestinal Worms of Man, 

 quoted, 481 



Bright, figures of ulceration of Peyer's 

 patches, 378 



Brisbane (Lady), sends gold-fish with 

 parasitic conferva on it to Mr. Bryson, 

 345 



Briicke and Hannover on the rods and 

 cones of bacillary layer of retina re- 

 flecting light back, 269 



Bryson (Alex.), on vegetable nature of 

 growth on fin and tail of gold-fish, 345 



Euccinum undatum, liver of, 415 



Bulbs, tooth-pulp and its sac, 51 



Burdach's Physiologic referred to, 20 



Bursarice on filaments of conferva of 

 gold-fish, 350 



Cccnurus cerebralis, 487, 503 ; C. hepa- 



ticus, 489, 503 

 Camels, canine teeth in, 53 

 Camper on metallic bodies inclosed in 



ivory, 58 

 Canine and upper incisors, germs of, in 



embryo of cow and sheep, 53 

 Carabus catenulatus, hepatic caeca of, 41 5 

 Carcinus mcenas, hepatic caeca of, 415 ; 



liver of, 423 



Carp, interorbitul space in, 157 



Carswell on cirrhosis of liver, 382 



Cartilage, nature of, 408 



Cams, view of the morphology of nervous 

 system in annulosa, 79; division of 

 skeleton, 102 



Cassowary, olfactory chambers of, 153 



Catacentric sclerotome, 110 



Catametopa have large generative organs, 

 429 



Cell (central), origin of others, 390 



Cells, various kinds of, in animals and 

 vegetables, 403 



Cell-wall does not separate and prepare 

 secretion, 426 



Cement of elephant's tusk, exogenous 

 growth of, 59 



Centres of nutrition, 389-392 



Centrifugal and centripetal nerves, their 

 electric relations are identical, 337 



Cetacea, substance in pulp-cavities of 

 teeth, 62 



Changes in pulps and sacs at various 

 stages till the eruption of the wisdom- 

 teeth, 26-43 



Chemical action, cause of electricity in 

 vegetables, 318 



Chemistry, mechanics, and other physical 

 sciences, how the knowledge of them 

 was advanced, 206, 208 



Child at birth, development of pulps and 

 sacs of teeth in, 23 ; between four and 

 five years old, sac and pulp of teeth 

 in, 25, 26 ; six years old, 26 



Chyle, absorption of, in fresh subjects, 

 394 



Cirrhosis of liver, 382 



Claudius on Corti's membrane, 283-286 



Cochlea, on the lamina spiralis of, 282- 

 288 ; Dr. Young's opinion that it was 

 a " micrometer of sound," 287 



Cod, interorbital space in, 156 



Comb on a spear-head found in tusk of 

 elephant, 64 



Cones of retina, 265 ; seat of impression 

 of light, 209 ; Goodsir's opinion that 

 they are not nervous structures, 270 



Confervce, their mode of reproduction, 

 212 ; which vegetate on the skin of 

 the gold-fish, 345-350 



Contraction (muscular) electric condition 

 during, 328 



Cooper (Sir Astley) on structure of 

 thymus, correction of one of his ob- 

 servations, 74 ; (Daniel), cotton-like 

 conferva on gills and fins of gold-fish, 

 350 



Corti, membrane of, in cochlea, 283 



Cow, follicular stage of dentition in, 53 



