402 Scientific Intelligence. 
from materials collected by the Swedish Polar wer seorstaed under 
the direction of Prof. Nordenskidla. This volume admirably 
completes the work, by the superior character of its execution and 
b 
eal floras of the Arctic and Polar regions. It contains, Ist, a 
paper on the Carboniferous flora of the Arctic zone 80 en pages 
and six plates); 2d, the Cretaceous flora of the Arctic zone (on 
and 4th, 
arctic zone (twenty: slice pages 
he most important part of this publication is that on the 
Cretaceous floras, not merely for the reason that the vegetation of 
the Cretaceous land was till now sca reely known, but beca ause its 
Upper a of Greenland, in which a ere abe of fossil 
a few monocotyledonous re a single dicot ledonous species, 
sie th 
ae 
ivision has in its flora rer a large proportion of Fern 
Conifers, two species of Cycas only, id skireyslows naidotytedonbiin 
species out of sixty-two which compose the whole flora, Among 
these there are species of the Genera Myriea, Ficus, Sassafras 
— of a from formations where synchronism is + pabbk able. 
ss 
va North American flora, this preponderance of American types 
eads us ~ refer the origin of our present flora to the Acseritan 
Cretaceo 
An ‘tceenadbice division, that of the Middle Cretaceous, is 
represented in the volume of Heer by a small number of plants 
