Geology and Natural History. 375 
the names given by Prof. Marsh have pas 
5. Preliminary Report of the U. 8. eological Survey of 
Montana and portions of adjacent Territory, being a Jifth Annual 
of Progress, p> Fe ¢ S. Geologist. Conducted 
under the authority of the Secretary of the Interior. Washington, 
1872.—This Report by Dr. Ha is one of unusual interest. 
lowstone Geyser region, a part of which has appeared under his 
name in this volume, besides notes on the geology along the route 
from Ogden, Utah, to Fort Hall in Idaho, Fort Ellis in Montana, 
and the Yellowstone ; and thence from Fort Ellis to Snake River 
basin, Fort Hall, Bear River valley, and Evanston, on the Union 
Pacific railroad ; and the text is illustrated by many sketches and 
several maps. 
Dr. Hayden’s special report is followed by a preliminary report 
on the minerals, thermal waters, etc., by Dr. A. C. Peale. We 
find in it that the siliceous deposit of the springs (geyserite, a 
variety of opal) afforded in one analysis, silica 83°83, water 11°02, 
loride of magnesium 4°00=98°85; the specific gravity was 
thickest to the north; it is one of the largest and best coal mines 
im the west. Dr. Peale’s brief report is followed by other reports 
as follows: 
On the Agricultural Resources of the Territories, by Prof. 
Cyrus Thomas; on the fossil Flora, Cretaceous and Tertiary, by 
L. Lesquereux; on the Geology and Paleontology of the Creta- 
ceous Strata of Kansas, by E. D. Cope; on the Vertebrate Fossils 
Bila eek; besides zoological reports, on e worms, by 
eidy, on Coleoptera, by Dr. G. on Henin ra, by P. 
Uhler, on Orthoptera, by P Thomas, on Butterflies, by 
rof. C. 
- H. Edwards, on Reptiles and Fishes, by E. D. Cope; a cata 
logue of plants, by Prof, T. C. Porter; and of the Mosses, by 
0 
the region, by J. W. Beaman, The volume contains thus a very 
large contribution to our knowledge of the physical features and 
condition, the geology, and Savaeey 
of the Rocky Mountain region. sti. 
Dana’s Mineralogy. Appendix to the Fifth Edition. pee 
and iv pages, 8vo.—An appendix to the last edition of Dana’s 
Mineralogy has just been issued by the publishers, J. Wiley & Son 
of New York. “It: has’ heen prepared y Professor G. J. BrousH. 
