REVIEWS 
The Mining World Index of Current Literature. By Gro. E. SISLEY. 
Chicago: Mining World Co., 1913. Pp. 234+xxiv. $1.00. 
A comprehensive list of current literature of mining, metallurgy, 
and allied industries for the second half of 1912. The list is arranged 
alphabetically by authors. For each article the title, the periodical: in 
which it appeared, the date of issue, the approximate number of words, 
and the price of the article are given. The general index is supple- 
_ mented by an author index and a title index. In the catalogue proper 
papers are grouped under the following heads: “Metals and Metal 
Ores,” ‘“‘Non-Metals,” “Mines and Mining,” “Mill and Milling,” 
“Power and Machinery,” “‘ Miscellaneous.’”’ The value of such a refer- 
ence work is so obvious as to require no comment. 
A. DEeB: 
Mineralogical Notes, Series 1 and 2. By WALDEMAR T. SCHALLER. 
Washington, 1911, 1912. U.S. Geol. Survey Bulls. No. 490, 
pp. 109, figs. 14, and No. 509, pp. 115, figs. 5, pl. I. 
The author includes in these two bulletins notes on crystal measure- 
ments and chemical analyses of a number of mineral species—some forty 
papers in all. The material is of interest chiefly to the mineralogist 
and crystallographer. It appears to be the beginning of a new series 
of papers to be issued as bulletins of the Geological Survey. 
ADEs Be 
Determinative Mineralogy. By J. VotNey Lewis. New York: 
John Wiley & Sons, 1913. Pp. 151, figs. 68. $1.50. 
This book follows the general plan of Brush-Penfield, with some 
changes in arrangement, considerable condensation, and the elimination 
of the rarer minerals. These changes seem to be decidedly advantageous 
for ordinary determinative laboratory work. The key is not so well 
arranged for very rapid work as Moses and Parsons; but this is more 
than outweighed by the greater completeness of Lewis’ tables. 
In the reviewer’s opinion it is by far the most satisfactory determina- 
tive work that has appeared in recent years, and should quickly find its 
place in many laboratories. 
A DE 
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