146 Scientific Intelligence. 
of about eighty feet, it regains again its old channel.— Jahrb. Min., 
1871, 582. 
Fl — Ca ign. quartz. 
3667 242 3:31 £90 0°62 «80-47 == O53—=101'39 
from which, ee ami the oxygen in excess, on account of the flu- 
orine, 1°59, leaves 99° 
on caine: ‘of Trilobite ee contained, on ding to the 
me chemist, PO, 19°45, CaO 45°06, CO, 16°45, Fl 2°88, with a 
little FeO, MgO, and 6°80 of volatile matters ails bituminous, 
corresponding to 42°46 phosphate of lime, 31°81 carbonate, 5°91 
fluo ne calcium, with some carbonate of iron, and “other 
missioner on his part so well and piers pal iy “The con- 
tents are divided in three parts, into twenty-one chapters with an 
introduction and appendix. Part I, Condition of Mining Industry. 
art I, Metallurgical Processes. "Part IIL, Miscellaneous. The 
wi m 
authentic sources. The chapter on the treatment of auriferous 
ores in Colorado is translated, with annotations by the Commis, 
sioner from a series of articles by Mr. Albert Reichenecker of 
Central City, Colorado, printed originally in the German Berg, 
und e Hileteeirtae and is illustrated te original drawn of 
ill m: ery a fu ing 
and ‘nal piniation "The results of Mr. J. D, Hague’s investiga 
tion on the same subject Cot ti ery, a ii, King’s 4 40th 
ment of ores and the results ‘of, aceite i, chapter is given on 
the “Speed of Stamps i in Colorado,” and another on “The Washoe 
Pan Amalgamation,” abridged from Mr. J. D. Hague’s memoir 
in the volume just named, and, for the chemical part, from 
Sehakeshid of Mr. Arnold Hague in the same volume. The Plattner 
Chlorination process for the treatment of Auriferous Sulphuret® 
