263 



Canipylopus lamelliuervis, leaves of, i. 330 



Canada, enormous quantities of petroleum in, i. 126 



Canina octonaria, larvae of. parasites of the Turritopsis nutricula, ii. 100 



Caoutchouc, whence obtained, i. 426 



Carbazotic acid, constituents of, i. 121 



Carbohydrates, combinations forming the, i. 116 



Carbolic acid, combination forming, i. 107, 120, 121, 128 



its property of arresting putrefaction, i. 121 



becomes solid when dried and purified, i. 121 

 Carbon, i. 13 



allotropism of, i. 15 



at variance \vith the geometrical system of crystallization, i. 15 



analogy between carbon and silicon, i. 18 



effect of the combination of the atoms of carbon and oxygen in 

 combustion, i. 30 



property of the bisulphide of, in the transmission of heat, i. 36 



effect of a discharge of the nitric acid electric battery, with car^ 

 bon balls on the terminals, i. 84 



will not combine directly with hydrogen, i. 97 



atomic weight of, compared with that of hydrogen, i. 100 



spectra of the compounds of carbon, i. 146 



bisulphide of, absorption of radiant heat by, i. 40 

 opacity of, to the invisible rays, i. 65 



in coal gas, i. 118 



how freed from coal gas, i. 118 

 Carbonic acid gas, i. 14 



reduced to a solid, i. 15 



weight of the atoms of, compared with those of hydrogen, i. 99 



absorption of radiant heat by, i. 41 



how freed from coal gas, i. 118 



one of the illuminants in coal gas, i. 118 

 Carbonic oxide, absorption of radiant heat by, i. 41 



action of different thicknesses of, on radiant heat, i. 48 



the poisonous quality of coal gas, i. 118 



Cardium, or cockle, structure and mode of reproduction of, ii. 230, 231 

 Carpentaria, structure and habitat of the, ii. 57 



a link between the Foraminifera and the sponges, ii. 57 

 Carrigeen, or Irish moss, structure and mode of reproduction of, i. 235, 236 

 Carcinus mcenas, structure and reproduction of, ii. 192, 195 



moulting and power of reproducing limbs, ii. 197 

 Caryophyllia Smithii, its formidable artillery, ii. 133, 134 



structure and development of, ii. 134, 135 



