ii4 A SYSTEM OF 



A. With parallel fibres, Afueftus fibris conftans 

 parallelis : Byjfus. 

 i. Pure and foft. 



a. Light green, from Schelkowa Gora in 

 Siberia. 



b. White, from Ulrica's Ort in the mine 

 of Salberg in Weftmanland : it is 

 there found together with mountain 

 leather. 



2. A little martial, and more brittle. 

 a. Greenifh, from Baftnas Grufva, at 

 Ryddarhyttan in Weitmanland. There 

 it forms the greater! part of the vein 

 out of which the copper ore is dug - y 

 a great part of it is confequently 

 melted together with the ore, and is 

 then brought to a pure femi-tranipa- 

 rent martial llag or giafs* 



SEC T. CVI. 



B. Of broken and recombined fibres, Af- 



befi its fibris conftans abruptis et conglutinatis* 

 i. Martial. 



a. Light green, from Baftnas Grufva at 

 Riddarhyttan. 



SECT. CVII. 



It has been already obferved under the title of 

 Cockle,, or Shirl, (Seel:, lxxiv.) that the afbeftus is 

 often confounded with it. 



Observation on the Asbestus Kind. 



I am much inclined to believe that the Afbefti, 



as well as the Mica?, are produced from an ar- 



- eillaceous 



