The Origin of our British Flora 
of Greenland and North America, They did not reach 
Europe until the Eocene, but appear to have afterwards 
enjoyed a European life, for in the Miocene they are 
important trees from the Baltic to the Mediterranean, 
and from the Atlantic to the Black Sea. They were 
driven south in the Pliocene age, and have now retreated 
to the shores of the Pacific and Indian Oceans, where 
they still live in some districts that have from 50 to 80 
inches of annual rainfall. Their western boundary now 
is the dry climate of the Persian and Arabian desert, and 
to the north the Himalayas and other great mountain- 
ranges," 
This is rather a triumph for the botany of to-day, 
The cinnamon has been traced from Ceylon to Green- 
land and during the whole interval of time that has 
elapsed from the first Cretaceous deposits to our own 
days ! 
1 Laurent. ? Engler. 3 Diels. ¢ Willkomm. 
5 Schulz. ® Heering, Engler, Keller. 7 Dengler, Birger. 
8 Smith, R. and W. G., Lewis, Smith and Lewis, Smith and Rankin, Moss. 
* Lewis. 10 Andersson, 11 Graebner. 12 Hoek. 18 Stant. 
235 
