766 REVIEWS 
A paper on “The Geology of Lake and Porter Counties,” by W. S. 
Batchley, is devoted mainly to the physiography of the two counties. 
The author states that the discussion is limited to this phase of geology 
‘since not a single outcrop of rock occurs in the two counties.” A 
considerable portion of the paper is devoted to the discussion of gla- 
cial phenomena. 
An economic paper by the same author discusses “The Clays and 
Clay Industries of Northwestern Indiana.” The paper treats in some 
detail of the origin, varieties, properties, impurities of clays and their 
analyses. Statistics are also given concerning the clay industry. 
“Report on the Niagara Limestone Quarries” is the subject of a 
paper by August Foerste. This report contains a discussion of the 
uses, properties, and distribution of the stone. From this paper we 
learn that the variety known as “Laurel limestone” is the most 
valuable variety ; that it occurs in natural slabs, is easily quarried, 
requires little dressing, is of a handsome color, and is very hard and 
durable. 
The paleontology of the state receives attention through E. M. 
Kindle, who has prepared a “Catalogue of the Fossils of Indiana.” 
The report also indicates the geological horizon of the species, and is 
accompanied by a bibliography of Indiana paleontology. 
A contribution to the ornithological literature of the state is found 
in a paper entitled “‘The Birds of Indiana,” by A. W. Butler. The 
paper contains descriptions of 321 species which have been identified 
within the state. It also treats of the songs, habits, and times of arri- 
val and departure, of the birds. 
Other papers in the report discuss mines, natural gas, and petroleum. 
WEAN Jb 
Sixth Annual Report Iowa Geological Survey, Vol. VIII. By 
SAMUEL Cavin, State Geologist. Desmoines, 1897. ; 
This volume embodies the results of field work covering an area of 
five counties. An important part of the work has consisted in a care- 
ful determination of the location and extent of mineral deposits, clays, 
building stones, and other economic resources, including a valuable 
discussion of the drift sheets and other surface formations preliminary 
to a complete description of the soils of the state. 
Of great interest to the people of Iowa will be the tabulated statis- 
