eet g a i ai a ki 
1876.] Geology and Palæontology. : 53 
tribes, particularly the Shoshones. The report is accompanied by a 
large colored geological map. We hope hereafter to print some extracts 
concerning the geysers and Indian inscriptions. 
OPE’S CRETACEOUS VERTEBRATES. — This elaborate and lavishly 
illustrated quarto volume, issued as one of the final reports of Hayden’s 
Survey, forms a worthy successor to the paleontological monographs of 
Leidy and Lesquereux, also published by Hayden’s United States Geo- 
logical Survey of the Territories. 
Scupper’s Foss. BUTTERFLIES is another exquisitely printed and 
illustrated monograph of a high order of merit, on a subject quite novel 
and as interesting to European students as to home observers. We 
shall return to these works in subsequent numbers. 
Hyarr’s Fossit Ammonites, with the works previously cited, wit- 
ness the activity now shown by American palzontologists. Several 
papers by Professor Hyatt have been issued during the past year, giving 
the results in brief of the studies of many years on the supposed genetic 
relations and classification of different groups of Ammonites. Of much 
interest in connection with the hypothesis of evolution are the papers 
entitled Biological Relations of the Jurassic Ammonites, and Genetic 
Relations of the Angulatide. An elaborate monograph by Professor 
Hyatt of certain groups of Ammonites, particularly the Arietide, to be 
illustrated by a number of plates, is to be soon published by the Museum 
of Comparative Zoölogy. ‘ 
Wincnety’s Groroay or tHe Brack Hirrs forms the geological 
report appended to Captain Ludlow’s (U. S. Engineers) Reconnaissance 
of the Black Hills of Dakota, 1874, but only lately published. 
report fills fifty-five quarto pages, embracing also a list of trees and 
shrubs, and is accompanied by a colored geological map of the route 
surveyed. 
Kerr’s Grotogy or Nortu Carorina.— Last of all is laid upon 
our table Prof. W. C. Kerr’s Report of the Geological Survey of North 
Carolina, Vol. I., Raleigh, 1875, containing Physical Geography and 
Economical Geolog , with maps and lithographic plates of fossils, de- 
scribed by Messrs. Conrad and Cope. : 
Tae Fossit PLANTS OF America. — Already the study of the 
North American fossil plants has supplied, in regard to the distribution 
of the Species at different periods, some important information, which 
modifies a few of the conclusions derived from European vegetable 
paleontology, Though the isothermal zones have been evidently of a 
vidth proportionate to the age of the geological periods, producing in 
the Carboniferous times, for example, uniformity of vegetation over the 
whole northern hemisphere, if not over the whole surface of the earth, 
it appears that there was already at this period a continental or local 
facies marked in the groups of vegetation. The North American charac- 
ter is recognized in the coal flora of this continent by Schimper, in his 
