3 H INDEX. 



Talitrus, or sand-hopper, structure of, ii. 201, 202 



Tar, coal. See Coal tar 



Tardigrada, characters of the, ii. 161 



Tartaric acid, chemical combination forming, i. 97 



Tea, active principle of, i. 428 



Tellurium, atomic weight of, i. 105 



its properties analogous to those of sulphur and selenium, i. 105 

 Terebella conchilega, structure of, ii. 153-155 

 Textularia, structure and habitat of the genus, ii. 41 



fossils of, ii. 42 



Textularia Mayeriana, form of, ii. 28 

 Thalassicolla morum, structure of, ii. 21 

 Thalassicollse, structure of, ii. 21 



Thalassyophyllum Clathrus, habitat and structure of, i. 250 

 Thallium, i. 3, 4. 



effect of the spectrum from an electric spark between points of, i. 64 



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



Mr. W. Crookes's discovery of the metal so called, i. 136 



spectrum analysis of, i. 137 



properties of, i. 137 



where found, i. 137 



changes in the spectrum of, by high temperature, i. 144 

 Thallus or frond, of lichens, i. 301 

 Thaumantia pilosella, form and structure of, ii. 92 



otolites of, ii. 93 



mode of reproduction of, ii. 94 

 Thorinum, i. 4 



Thunder-dirt of the New Zealanders, i. 268 

 Thyme, absorption of radiant heat by the perfume of, i. 44 

 Timmia, leaves of, i. 330 

 Tobacco, spectrum analysis of, i. 136 



Tobacco, narcotic effect of, and as a relief from hunger, i. 428 

 Toluidine, property of, in producing the aniline colours, i. 122 

 Toluol, constituents of, i. 121 

 Topaz, oriental, i. 4 

 Torula cerevisise, structure, development, and cell-multiplication of, 



i. 287 

 Transparency in liquids and solids synonymous with discord, i. 36 



causes of transparency, i. 37 

 Transpiration of gases, i. 110, 114 

 Tree ferns, structure of, i. 341 

 Trees, constitution of the steins of, i. 174 



