xxxviii 



LIST OF ILLUSTRATIONS. 



NO. 



858. 

 854. 

 855. 

 856. 

 857. 

 858. 

 859. 

 860. 

 861. 

 862. 

 863. 

 864. 

 865. 

 866. 

 867. 

 868. 

 869. 

 870. 

 871. 

 872. 

 878. 

 874. 

 875. 

 876. 

 877. 

 878. 

 879. 

 380. 

 881. 

 882. 

 883. 

 884. 

 885. 

 886. 

 887. 

 888. 

 889. 

 890. 

 891. 

 892. 

 393. 

 894. 

 895. 

 396. 

 897. 

 398. 

 899. 

 400. 

 401. 

 402. 

 403. 

 404. 

 405. 



Muscle torn to show fibrilhe, . *>".--';'>. . . Bowman, 

 Structure of ultimate fibril, . . . . - Original, 



Parasitic fresh-water Alga 

 Callithalmia Baileii 

 Alga, from Barbadoes, . 

 Alga, from Lake Michigan, . 

 Transverse section of muscular fibre, 

 Organic muscular fibre 



do. 

 do. 

 do. 

 do. 

 do. 

 do. 



Original, 

 do. 

 do. 

 do. 

 do. 

 do. 



Nervous system, Asterias rubens, . . . .'~# "' . . Tiedemann 



Nervous system, Leech, ' 



Nervous system, Lepas, . . '^t- . uyj . 



Brain of lulus, . . .:;*. 



Portion of Nervous system, Polydesmus, 



Nervous system, Talitrus, 



Nervous system, Cymothoa, 



Nervous system, Lobster, . do. 



Nervous system, Crab, do. 



Nervous system, Caterpillar, do. 



Brain of Caterpillar, highly magnified, . . . . Ji 

 Nervous system in situ, Blatta Americana, --i-- >* I f rv.i -< -* 

 Nervous system, Spider, . . - . . . *' .'' 



Salpa Poly cratica, ; "> ^ .^IWiWM^I 



Nervous system of Salpa Polycratica, . . . . i : .*.L 



Dorsal mantle of Terebratula Australis, . . - .- :>. <. 

 Nervous system of Terebratula Australis, . . . .- ^--M 

 Nervous system of Mytilus edulis, . . '< -< i" -.:;>*v 



Nervous system of Bulla lignaria, . . . - * ; ;.* <- 

 Nervous system of Carinaria Mediterranea, -'V-J to & .': ;* w 



Nervous system of Harpa elongata, . . -. *. vv;. ?*..--. 



Nervous system of Clio borealis, . . ^V-^ !v i-'^*. W ^ 



Nervous system of Pearly Nautilus, ~v.it. . -> ^.^ -- .;., i . 



Nervous system of Trigla lyra, . . . 



Nervous system of Conger Eel, . . 



Nervous system of Tadpole, fourth day, . . : J> L fa &-. 



Nervous system of Tadpole, sixth day, . - . . . . r w> j 



Nervous system of adult Frog, . . ..>..-8W;H .*::- -'L f .. . 



Brain of the Turtle, . , ., .:.,;: .,.; ;,U '.=** . . f 



Brain of the Chick, . . . . . . . . . . . ; - , , 



Brain of the Stork, . . .. . .,4-^:^1^^*^ 



Brain of the Buzzard, . .,^.^11 &'.. ., . :, ^^^/., f ;, 



Brain of the Human Embryo, ,r;.i4ii;li .:Ici; 



Brain of the Human Embryo, side view, . .,*L-ii$iv. atti . ,;> 

 Brain of the Human Embryo, sectional view, . . . . ^m 



Cerebro-spinal axis, Man, . . . .. . .. -i..,;\ 4 



Axis cylinder, of nerve, . . . . . . . , 14 



White substance of Schwann, . . . . . .]'. . 



Axis cylinder, containing white substance, . . . . 



White substance covering the termination of axis cylinder, 

 Median nerve, Human, . . .. ^ : 



Sympathetic nerve, Human, ,v, . 



Section of sympathetic ganglion, 



Ganglion corpuscles from the gray substance of the spinal chord, 

 Portion of nerve, Blatta Americana,. , ,:&;... o 



PAGE 

 227 

 227 

 229 

 229 

 229 

 230 

 231 

 232 

 235 

 237 

 239 

 240 

 241 

 243 

 243 

 243 

 244 



