17* ANALYSIS OF L1THOMARCE 



the mountain will be fcen in the Tr an fusions of 

 the Stockholm Academy *. 



The colour of the earth is more or left com- 

 pletely cineiitiuus ; its furface tomcuhut lough, 

 ami feds usifgreaied, It is pompofcd of incgulat 

 particles. Though it appears llratilied,yet it can- 

 not be fcparatcd into regular lame-Ike, but breaks 

 always into large pieces with acute angles, refcm- 

 bling almoil the concave and convex fractures of 

 filiceous fubilanccs. It cxcclls in liardnefs the 

 Lemnian earth. When a fulid piece of it is ap- 

 plied to the lip, it adheres very llrongly. Old 

 fillurcs in it are covered with a yellow ochre. It 

 has an earthy fmell ; no tafte ; but feels bu- 

 twcen the teeth more filiceous than the Lem- 

 nian earth. 



When immerfed in water, it feparates in the 

 1:1 me manner as the Lemnian earth, but rather 

 into fmaller particles. JJeing moiltened and 

 rubbed between the hands, it creates no froth, 

 but it is notwhhiiandiug detergent* 



When pulverifed, and boiled for half an hour 

 in dillilled water, it paillrs perfeclly clear 

 through a double filtre, ajid docs not allecl the 

 papers employed as reagents. 'J'he nitrous fo- 

 ]ution of iilver occafions a fmall precipitation, 

 ^vhicli blackens by expofure to the light of the 

 Am. 



if 



- D. Tibs in Adis Stockh. 1739. ta ^- *- 



