1887] Recent Literature. IOLI 
` Coulter and Thompson. James. 
No doubt this gradual change, produced return to the north, at the close of the 
_ by an attempted adaptation to climate glacial epoch.” P 57- 
__ and surroundings, will account for many 
of the very nearly related species and 
varieties in North America and the East- : 
_ em Continent.” P. 273. 
_ _ “Hence we must conclude that our [I conclude] “ 2nd. That the species 
of pl 
ra 
_ the far North, and once flourished around ica have had a common origin in the 
_ the North Pole; that it driven south land about the North Pole. 
_ by the cold of the glacial epoch,” ete. « 3d. That they have migrated south 
R24 on account of the cold in the Arctic 
; regions,” etc. P. 67. 
__ These passages will give an idea of the similarity in thought 
-between the two articles. There is no reference in any place to 
_ Wty article, although the authors must have had it before them. 
_ Isubmit that it is only fair to refer to an article from which so 
_ Many ideas have been gleaned.— Foseph F. Fames, Miami Univer- 
_ ly, Oxford, O., October 10, 1887. 
i Ridgway’s Manual of Ornithology.'—In this book we have 
the result of the knowledge of one of our first ornithologists, 
Mr. Robert Ridgway, brought fully up to date. No one is more 
_ fompetent for the task, and the student as well as the sportsman 
th tely implicitly on the statements contained in this book. 
adapted to the presentation of brief definitions, especially those 
hike higher groups. When it comes to the presentation of 
the nu 
"P, and the results are a warning to all careless renamers. e 
contr been adopted for that of a genus. The result is a 
po, topsis of the Flora of the Laramie Group.*—In this im- 
Questio Pet Mr. Ward gives a general view of the subject se 
=` on, which embraces a total of 1540 species. f these 
hundreg 3 rth American Birds, by Robert Ridgway. II ip 
Lippincott Go -four outline drawings of pima characters. Philadelphia: J. B. 
oy iz ` el ee 
By taser pE Annual Report U. S. Geol. Survey of the Territories, 1886, Pa 
