9 
ference between the forest zones on the different sides of the 
mountain. Then the question immediately arose what has caused 
this difference almost as symmetrical as Mt. Fuji itself? 
The vegetation, as one may see from the base of the mountain, 
is roughly divided into six zones according to the altitude, viz. 
the prairie, the region of broad leaved trees, the ever-green 
conifer belt, the region of Larix, the stunted shrubbery, and 
the alpine stretches. But more broadly speaking, when only the 
sides of the mountain are considered, the regions of vegetation 
may be divided into two — northern and southern. On the 
southern side of the tree region, deciduous broad leaved trees 
predominate, but on the north the ever-green needle leaved trees 
are characteristic. The cause of this difference is an interesting 
subject for investigation. 
In the course of my study, I have found that the different 
aspects of the tree regions are explainable by the differences of 
climate and soil according to altitude and exposure. In this 
paper, I have endeavoured also to enumerate all the plants found 
on the mountain and to arrange them in order according to 
regions, as explained in the map annexed. 
In conclusion, I must express my hearty thanks to Prof. 
J. Matsumura, by whose special permission this work has been 
carried out. I am also indebted to Prof. M. Miyoshi for his 
kindness to give me the privilege of reproducing some figures from 
his “Atlas of Japanese Vegetation”; to Dr. Y. Shiozawa by 
whose kindness I was able to secure all the data relating to the 
alternation of the forest regions ; and to Mr. T. Makino who 
has kindly assisted me in determining the collections that I have 
made on the mountain. Nor should I forget to mention my 
obligations to Dr. T. Okada who has liberally furnished me 
with all the meteorological data relating to the peak. 
June 1907. 
