7. 
“The Form of a Mining Report” next following is one 
universal in its application. It is a form extensively 
used by mining engineers, and may be modified so as to 
suit any particular case. 
Part II gives the method and formule for assay- 
ing Gold, Silver, Lead and Copper ores. Methods for 
making Laboratory Tests of gold and silver ores, by the 
Cyanide, Chlorination and Amalgamation Processes are 
described. Then follows the subject of Blowpipe Analy- 
sis with a full descriptive list of blowpipe tests of the 
more common metallic substances and minerals met 
with. 
Part III is devoted wholly to the subject of “De- 
terminative Mineralogy.” After discussing the physi- 
cal properties of minerals and giving all necessary rules 
for their determination, the Analytical Tables of min- 
erals are given. 
The system of grouping minerals according to the 
most prominent metal or element entering into their 
composition has been adapted. Upwards of 345 of the 
more common and useful minerals are described, and in 
such a way as to admit of identification wherever met 
with in nature. The design of these tables is (in part) 
original with the author, and the plates from which they 
were made were prepared at a considerable cost by 
the skilled engraver, Mr. Selig Olcovich of Denver, Colo. 
One peculiar feature of these tables is that the plate 
containing the names of the minerals and their analyti- 
cal description is made to fit the single page of the book 
and both sides of all pages are utilized. In the col- 
umns of each page is given, first, the names of the min- 
erals; in the second column, their chemical composi- 
tion (not in formule; but the names of all metals and 
elements are written out with the percentage of each ele- 
