Ferns we have three plates (many ae os two species) for a dollar ; 
72 Scientific Intelligence. 
Upper Pine River east of the mountains; and that the Jurassic 
and Cretaceous seas were probably equ ally extensive; that some 
Texas Cretaceous species have been found in deposits of the same 
age on Peace River and_on Vancouver Island; that during the 
Mesozoic there was no ensky Mountain barrier separating the 
ee st ae those west. 
(i rus Devonico-Carboniferus; The Flora and Fauna 
of the peukaecs and Carboniferous Per iods, with large Addenda 
(from recent acquisitions); by Joun J. Bres By, M.D., F.RS., 
F.G.S. 448 pp. 4to. London 1878 6. (J. ait Voorst. )—Ten 
years have passed since the publication of the Thesaurus Siluricus 
y Dr. Bigsby; and now has appeared a volume still Larger, and 
equally elaborate hd complete, on the veh So and Carbonifer- 
ous Periods. Like the former work, it gives tables of the names 
8 
constructed as to exhibit the horizons of the species, their recur- 
rences, localities, references to the places where described, and the 
synonymy of genera and species. In addition, the author lays 
down his deductions from a survey of the facts, deseribes sections 
of the Devonian and Carboniferous in Great Bri ain, various 
countries of Europe, and in other parts of the world ; ives lists of 
the fossils of these countries, thirty in number, and a a catalogue of 
the works an memoirs o on the subject. The volume i is hence most 
TP 
pend) 
5 
ot 
~ 
=] 
wm 
known at the time of publication of his work 
(February, 1878) is about 9500, of Devonian 5600, of Carbonifer- 
ous 8700, 
Dr. Bigsby spent five summers in traveling puionge the Cana- 
das, east and west, together with the State of New York and the 
States bor dering on the Great Lakes, and the country northw ard to 
Hudson’s Bay, and thus has had personal acquaintance with the 
older American rocks and their fossils, and also with many Amer- 
ican geologists. 
Ill. Botany AND Zoouoey. 
1. The Native Flowers and Ferns of the United States ; by 
Tuomas Mrernan, Illustrated by chromo-lithographs. Boston: 
L, Prang & Co, his Tand II, not dated, but issued in May, 1878. 
Each part with 4 plates and 16 pages of letter-press. Imp. 8vo. 
Published at 50 cents Lape Sa the title this work might be 
aim is somewha' lee ere is no attempt to rival the ex- 
qnisiteness of these, and rey size is “aE pa The endeavor here is 
to give g setia at a wonderfully low price. In the work on 
2 aaere we have four for half the money. And the publishers, the 
