FOREST GEOGRAPHY AND ARCHEOLOGY. 219 
could be most simply exhibited, by the addition of two or 
three similar ones. Two would serve, one for Europe, the 
other for northeast Asia. A third would be the Himalay- 
Altaian region, geographically intermediate between the other 
two, as the Arizona-Rocky Mountain district is intermediate 
between our eastern and western. Both are here left out of 
view, partly for the same, partly for special reasons pertaining 
H 
1 2 3 t 
1. Atlantic American Forest. 3. Japan-Mandchurian Forest. 
2. Pacific American Forest. 4, European Forest. 
to each, which I must not stop to explain. These four marked 
specimens will simply and clearly exhibit the general facts. 
Keeping as nearly as possible to the same scale, we may 
count the indigenous forest trees of all Europe at thirty-three 
genera and eighty-five species ; and those of the Japan-Mand- 
churian region, of very much smaller geographical area, at 
sixty-six genera and one hundred and sixty-eight species. I 
here include in it only Japan, eastern Mandchuria, and the 
adjacent borders of China. The known species of trees must 
be rather roughly determined; but the numbers here given 
are not exaggerated, and are much more likely to be sensibly 
