14 



PEOF. J. G. MAOGREGOE ON 



Sulphur (Sicilian)- 



Substance. 



Do. 

 Do. 



J 



Do. (crystallized from 

 solution in Car- 

 bon Bi-sulphide) 



Do. (crystal) 



Do. (natural crystal)- 

 I 

 L 



Do. (after heating to 

 140°C) - 



Do. (after heating to | 

 240° C) i 



Tellurium (crystallized) ■{ 



axlO" 



Do. (comp. powder) 



Do. (cast) . . 

 Thallium (cast) 

 Tin 



Do. (Malacca, compres'd 

 powder) 



Do. (pure) 



Topaz 



Tourmaline. 

 Type Metal . 



Do. 

 Vulcanite- . ■ 



Do 



Do. (22-2 per cent, of 

 Sulphur) . . . 



12800 



/- X 10" 



186000 



ex 10" 



1.53 



4335 

 7694 

 6100 



6281 



8625 

 17115 



7890 



5265 



18300 



114000 



