XXX LIST OF ENGRAVINGS. 



Fig. Page 



425 Highly magnified view of the outer margin of the preceding 



section, (id.) ------ 344 



426 Portion of the section of the eye of the Melolontha vulgaris, 



(xMuller) - - - - - - 344 



427 Portion of the section of tl)e eye of the Libellula, (Dnges) 344 



428 Portion of the section of the eye of the Melolontha vulgaris, 



(Straus Durckheim) ----- 344 



430 Interior of the eye of the Percaj^iii;?V/H//s, (Cuvier) - 349 



431 Fibres of the crystalline lens of the Cod, (Brewster) - 350 



432 Denticulated structure of these fibres, (id.) - . - 350 



433 Section of the eye of the Goose, (Home) - - 353 



434 Nictitating membrane of a Bird, (Petit) - - - 353 



435 Muscles of the nictitating membrane, (id.) - - 353 



438 Talilrus, (Latreille) - - - - - 381 



439 Nervous system of the Talitrus, (Audouin) - - 382 



440 Nervous system of C^/mof/ioa, Fab,, (id.) - - - 382 



441 Nervous system of the il/aia s^wma^^o, (id.) - - 383 



442 Nervous system of the Larva of the Sphinx ligustri, (New- 



port) 386 



443 Ditto of the Chrysalis of the same, (id.) - - - 386 



444 Ditto of the Imago of the same, (id.) - - - 386 



445 Nervous system of the Asterias, (Tiedemann) - - 387 



446 Ditto of the jl^Z?/sm, (Cuvier) - - - - 387 



447 of the Patella, (id.) . ... 387 



448 oHhQ Sepia Octopus, (\A.) - - - - 387 



449 Brain and spinal marrow of the Cqlumba turtur, (id.) - 389 



450 Transverse section of the spinal marrow of the Cyprinus car- 



pio, - - - - - - - 389 



451 Brain and spinal marrow of the Trigla lyra, (Arsaky) - 389 



452 Brain of the MurcBua conger, (Serres) - , - 389 



453 Percafuviatilis, (Cuvier) . - _ 389 



454 Testudo mydas, (Carus) - - - - 389 



455 Crocodile, (id.) - - - - - 389 



456 Lion, (Serres) - . - _ . 339 



457 Lateral view of the brain of the Perch, (Cuvier) - - 389 



458 of the Testudo mydas, (Carus) - - _ 389 



459 of a section of the brain of the Dove, (id.) - 389 



460 of the Lion, - - - - - - 389 



461 Vertical section of the human brain, (Monro) - - 393 



462 Progressive changes in the Monas - - - - 410 



463 Vorticella 410 



