HAUYNE. 107 



retort. At a lower temperature a light oil is distilled. It 

 occurs in small contemporaneous veins with rhombohe- 

 dral Quartz, rhombohedral Lime-haloide, and Iron-ores, at 

 Merthyr Tydvil in South Wales. It has been described 

 by Mr BRANDE under the denomination of Mineral Adipo- 

 cire. 



The description of Hatchetine agrees very nearly with 

 the following one given of Mountain Tallow, in Vol. XI. 

 of the Edinburgh Philosophical Journal. 



Mountain Tallow has the colour and feel of tallow, and 

 is tasteless ; its specific gravity is = 0*6078 in its natural 

 state, but it is increased by melting it to 0-933, the air 

 bubbles being driven off. It melts at 118, and boils at 

 290 ; when melted it is transparent and colourless, but be- 

 comes opake and while on cooling. It is insoluble in wa- 

 ter, but is dissolved by alcohol, oil of turpentine, olive-oil, 

 and naphtha, when hot, but is precipitated when they cool. 

 It does not form soap with alcaline substances, but is 

 combustible. It has been found in a bog on the borders 

 of Loch Fyne, and has been formerly noticed on the coast 

 of Finland ; in one of the Swedish lakes ; near Strasburg; 

 and by Professor JAMESON in Scotland. 



HAUYNE. 

 SPAR. 



Haiiyne. JAM. Syst. Vol. I. p. 394. Man. p. 323. 

 Haiiyne. PHILL. p. 111. 



Tessular. Crystallised in dodecahedrons. Grains. 

 Cleavage dodecahedron, not very distinct. Frac- 

 ture uneven. 



Lustre vitreous. Colour blue, commonly bright, 

 verging to green, white. Streak white. Trans- 

 parent ... translucent. 



Scratches glass easily. HAUY. Sp. Gr. = 2-687> 

 L. GMELIN; =3-333, GISMONDI. 



