PHYSIOLOGICAL INDEX. 



Locomotive organs of the Leech 218 



the Earthworm 229 



Dorsibranchiate Annelida 246 



Julus 281 



Scolopendra 287 



Legs of Insects 298 



Wings of Insects 304 



Muscular system of Insects 308 



Spinning-organs of Arachnida . 381 



Locomotive apparatus of Crustacea 387 



Cirrhopoda 451 



Mantle of the Ascidia 480 



" Foot " of Conchifera 496 



Byssus of Mussel and Pinna 497 



Apparatus for opening and closing shells of Conchifera .... 498 



Arms of Brachiopoda 511 



Muscular system of Gasteropoda 523 



Locomotive organs of Pteropoda 553 



Tentacula and suckers of Cuttle-fish 560 



" Sails " (so called) of Argonaut 563 



Arms and float of Nautilus 565 



Fins and muscular system of Fishes 637 



Muscular system of Eeptiles 684 



Locomotion of Birds 721 



Muscular system of Mammals 778 



SKELETONS OF INVEETEBEATA. 



Solid framework of Sponges 21 



Po'yparies of Fungiae and Meandrinse 54 



cortical Anthozoa 56 



Alcyonidse 60 



Madreporidae 67 



Corattium and Iris hippuris 68 



Gorgonia 69 



Pennatulidse 70 



Tubiporidaa 70 



Tubularia 85 



Sertularidae 92 



Internal plates of Porpita and Velella 126 



Skeletons of Echinodermata : 



Crinoidae 162 



Asteridee 172 



Echinidse 190 



Myriapoda 280 



Insecta 295 



Arachnida 363 



Crustacea 386 



Cirrhopoda 449 



Conchifera 491 



Brachiopoda 509 



Gasteropoda 519 



Cephalopoda 568 



First appearance of internal osseous skeleton 568 



SKELETONS OF VEETEBEATA. 



a. Cuticular or Exo-skeleton. 



Dermo-skeleton of Fishes 642 . 1748 



Hair and other epidermic structures 802 . 2347 



Horns of Deer . . 803 . 2349 



