Insects in Great Britain . 565 
Classes F and H. It is not worth while to separate the two 
classes here ; for there are but three species assigned to F, 
and of them only one ( Silene acaulis) appeared as a true 
Lepidoptera-flower. The species of plants obtained attention 
as in Table XX. The decidedly desirable insects showed 
their marked preference ; and nearly one half of the total 
number of individuals of them, which we observed to visit, 
went to flowers of these two classes, and made 57*73 P er cent * 
of their visitors. 
TABLE XXI. 
Available. 
F and H. 
No. 
% 
No. 
% 
Distinctly desirable 
Desirable .... 
Indifferent . . . 
Injurious .... 
L 7 6 3 
1 » 2 77 
12,993 
L 273 
10.19 
7-37 
75.08 
7.36 
870 
87 
413 
*37 
57*73 
5-77 
27.4 1 
9-°9 
We found that in Class B' the blue-lilac flowers attracted 
the best of the insects, that the rose-purple came next, that 
yellow followed, and that white or eyed flowers came last. 
Experience with Classes F and H is different, and our figures 
are as follows: with white at the top, rose-purple second, 
yellow third, and lilac-blue last. 
TABLE XXII. 
Lilac and 
blue. 
Rose and 
purple. 
Yellow and 
scarlet. 
White. 
Decidedly desirable 
Desirable .... 
Indifferent . . . 
Injurious .... 
16.66 
12-35 
60.31 
10.67 
74.67 
5*95 
16.50 
2.88 
46-26 
I.77 
32-75 
19.22 
76-55 
7.24 
15.86 
•34 
In the table which follows and which amplifies XXI, we 
have kept Campanula apart, for it certainly is a peculiar type ; 
Q q 2 
