PHYSIOGRAPHY. 



Wagnerite Wavellite. 



265 



3. It occurs in short and irregular veins of Quartz, in clay-slate, in 

 the valley of Hollgraben, near Werfen in Salzburg. 



WATER. Pure Atmospheric-Water. MOHS. 

 Amorphous. Transparent. Liquid. 

 Sp. gr. = l-0. Without odor or taste. 



1. It consists of oxygen 88-94, and hydrogen 11 06; but contains va- 

 rious proportions of earthy substances, salts and acids, which considera- 

 bly affect its taste, odor and specific gravity. If the temperature be be- 

 low 32, it assumes the con lition of ice, snow or hail, or if sufficiently 

 elevated, it is converted into vapor or steam. The crystals of ice or 

 snow resemble the regular compositions of White Lead-Ore. The grains 

 of hail are compound; those which fall during the changeable season of 

 spring have the form of spheric sections, consisting of thin prisms, radia- 

 ting from the centre, which prisms are columnar particles of composi- 

 tion, and commonly opake. The hail formed during heavy thunder 

 storms, usually assumes the shape of irregular flattish globules; it is al- 

 so compound, but often perfectly transparent, and including air hubbies. 

 2. Water in its ordinary state, or in the form of dew, mist, rain, snow., 

 hail and ice, is spread over the entire surface of the globe. 



WAVELLITE. 



Primary form. 

 122 15. 



Secondary form. 



Prismatic Wavelline-Spar. 

 Right rhombic prism.- M on M ~ 



Fia. 469. 



\ 



M 



a on a 

 a on gi 

 gl on g% 

 g\ on k 

 g2 on h 

 VOL. n. 



M 



107 26' 

 122 24 

 174 45? 

 112 30? 

 Ii2 25 



PHILLIPS. 



u 

 u 

 u 



