44 
Paul Jaccard. 
Species noted 
in 1 locality 
29% 
yy 
yy 
2 
yy 
20 
yy 
yy 
3 
yy 
12 
yy 
yy 
4 
yy 
9 
yy 
yy 
5 
yy 
8 
yy 
yy 
6 
•y 
5 
yy 
yy 
7 
y y 
6 
yy 
yy 
8 
yy 
5 
yy 
yy 
9 
yy 
4-5 
yy 
yy 
10 
yy 
0-9 
Fig. 1 shows the character of the curve corresponding to these 
figures (dotted line B). If the ten localities are grouped according 
to four degrees of frequency the following figures given below are 
obtained, and these give, in the graph, an almost straight line (B”) 
in which the irregularities of B disappear. The line B' corresponds 
to five degrees of frequency. 
Fig. ]. Graph show- 
ing degree of frequency 
of 370 species of alpine 
meadow. B, B' and B" 
curves, corresponding 
with 10, 5 and 4 degrees 
of frequency. 
Number of localities. 
Species noted in 1 and 2 localities (rare) ... ... 49% 
„ „ 3,4 and 5 ,, (somewhat rare) 29 
,, ,, 6, 7 and 8 ,, (somewhat common) 16 
n ,, 9 and 10 „ (common) ... 5-4 
