Preface 
The publication of this little volume is the result 
of a long cherished plan; although not as complete in 
its discussion of the subject of ore deposits, the exam- 
ination of mines, assaying, etc., as were the author’s orig- 
inal intention, these omissions are thought to have been 
compensated for in part by giving more space to the 
subjects of determinative mineralogy and blow-pipe 
analysis. In the composition and compilation of the 
subject matter herein contained, all due precautions 
have been observed in order to render the information 
perfectly reliable and trustworthy, and to this end all 
descriptions of minerals appearing in the tables were 
carefully compared with those given in the following 
named standard works on the subject of mineralogy: 
System of Mineralogy, by E. S. Dana; Determinative 
Mineralogy and Blowpipe Analysis, by Brush & Penfield. 
Other valuable authorities consulted are: Ore Deposits, 
by J. A. Phillips; Ore Deposits of the United States and. 
Canada, by J. F. Kemp, and A Manual of Practical As- 
saying, by H. V. F. Furman. The names of all authori- 
ties consulted are mentioned in the foot notes. 
Where inadvertently omissions have occurred and 
due credit has not been given, the author would esteem 
it a favor to have his attention called to the neglect. He 
would also be pleased to receive criticisms on the work 
so that he may be able to take advantage of them should 
a future edition be called for. It will be observed that 
in order to render the information of this little book 
