X PHYSIOLOGICAL INDEX, 



Tactile organs of Cephalopoda 

 Sense of touch in Reptiles 



in Birds 



in Mammalia 



SENSE OF TASTE 



in Insects ..... 



in Crustacea ..... 



in Cephalopods ..... 



in Fishes ..... 



in Reptiles ..... 



in Birds ..... 



in Mammals ..... 



SENSE OF SMELL 



in Insects . . 



in Crustacea ..... 



in Nautilus Pompilius .... 



in Fishes ...... 



in Reptiles . . 



in Birds ...... 



in Mammals ..... 



SENSE OF VISION. 



Red specks observable in Acrita 



. in Rotifera 



in Lamproglena pulchella 



Eyes of Leech . 



Simple ocelli of Insects 



Compound eyes of Insects . 



Eyes of Crustacea .... 



the Scallop (Pecten) . 



Snail .... 



other Gasteropoda 



Nautilus Pompilius 



Cuttle-fish . 



Fishes .... 



Reptiles . - . 



Birds .... 



. Mammalia . . . . . 



SENSE OF HEARING 

 in Insects 



in Crustacea . 



in Cuttle-fishes ..... 

 in Fishes ... 



in Reptiles ..... 



in Birds . . . 



in Mammalia ..... 



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LOCOMOTIVE ORGANS. 



Condition of muscular system in Acrita 

 Coelelmintha 



Bryozoa 

 Rotifera 

 Epizoa 



Suckers of Star-fishes 

 Suckers of Echini 

 Spines of Echini 

 Suckers of Holothuria 

 Muscular system of Siponculus 

 Locomotive organs of the Leech . 



. Earthworm 



Setae of Dorsibranchiate Annelidans 



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