1894.] Recent Literature. 865 
RECENT LITERATURE. 
The Colorado Formation.'—This memoir by T. W. Stanton is 
published as Bulletin, No. 106 of the U. S. Geol. Survey. It comprises 
the descriptions and illustrations of all the species that can now be as- 
signed to the fauna, thirty-nine of which are believed to be new to 
science. In an introductory chapter the author defines the Colorado 
formation, describes local sections, and gives faunal lists that show 
the vertical range and areal distribution of most of the species. This 
formation has been recognized by means of its characteristic fossils in 
Iowa, Minnesota, the Dakotas, Nebraska, Kansas, Colorado, Wyoming, 
Montana, Utah, Arizona and New Mexico. Emquivalent strata exist in 
Texas and the adjacent regions, and over large areas in British Amer- 
ica. As yet it is unknown east of the Mississippi, but it may have an 
equivalent on the Pacific coast, as one of its most characteristic fossils, 
Inoceramus labiatus is reported from the Upper shales and sandstones 
of the Queen Charlotte Island. 
= Mr. Stanton considers the fauna, a as a whole, the taxonomic equiva- - 
lent of the Turonian, as first pointed out by Co 
The memoir is richly illustrated with 45 page plates of drawings 
carefully finished in detail. 
Our Native Birds of Song and Beauty.’—This work by Mr. 
Nehrling is designed to awaken a love for nature among young people 
and particularly to interest them in bird-life so that they will not only 
` protect it, but they will also study the habits and learn the haunts of 
birds with the view of fostering them by providing suitable nesting- 
places. Itis issued in quarto form and the publishers have left nothing 
to be desired in the way of paper, type, and all that goes to present a 
book in an artistic form. The complete work will be a treatise on all 
the native North American Birds from the Thrushes to the Parrots. 
Vol. I, which is now at hand, carries the reader through the Swallows. 
An introductory chapter contains brief remarks on birds prized for 
their song or beauty, their habits, migration, their utility, their enemies, 
their protection ; and the acclimatization of exotic birds. Then follow 
E The Colorado Formation and Invertebrate "men By T. W. Stanton. Bull. 
of the U. S. Geol. Surv., No. 106. Washington, 
? Our Native Birds of hd and Beauty. Vol. E D Henry N — Mil- 
"^waukee, 1893. 
