334 THE INFLUENCE OF INSECT-AGENCY 
the two ends from the median line insensibly, whilst in B. serotinus 
its margins are furnished with long hai 
in a few localities, often with its congener. cimens kindly given 
m spe 
e by Mr. Blytt it appears that both plants es in South Norway, 
though they are both confined to a very few isolated stations recently 
discovered. The plant from Bergsfjeld is certainly B. Benekeni; a 
specimen from Lier, however, is, I believe, B. serotinus, but is too young 
for certain identification. : 
THE INFLUENCE OF INSECT-AGENCY ON THE DISTRI- 
i BUTION OF PLANTS. j 
By Atrrep W. Bennet, M.A., B.Sc., F.L.S. ` 
The very Posee papers by Mr. Briggs and Mr. Grindon, on the 
o 
o 
eo 
B 
g 
S 
"S 
e 
ui 
— 
£ 
rs 
a 
oa 
tai 
5 
'$ 
Q 
ex 
an 
B 
et 
z 
i 
i 
E 
N 
5 
© 
=h 
o 
£e 
m 
round this subject by the writings of Mr. Darwin, the study of physio- 
logical botany is, unfortunately, so neglected in this country that know 
ing paper in ‘ Nature,’ of October 10th and 17th, on the Fertilization ot 
THE 
the fertilization of our common wild flowers. No such list, as far as 
I know, has ever been published. I cannot help thinking that the reason 
of the otherwise inexplicable absence of species from certain localities 
+ bs 
effect their fertilization. I was particularly led to this conclusion by Mr. 
3rindon’s remarks of the non-occurrence in the neighbourhood of Man- 
chester of all “the fragrant Labiates, every Labiate, in fact, that yields 
powerful odour, except Stachys sylvatica ; ” this is very suggestive of the 
absence of those insects which are attracted by the labiate odours. It = 
difficult * believe that any climatic reasons can account for the absence of 
vulus j 
ium album, and Papaver Rhæas, from Lanca- | 
arvensis, 1 : 
shire ; or of Solanum nigrum and Plantago media, from Devonshire. 
