26 ON RUBUS LEESII. 
Many moths assume the imago state at this season alone ; and entomo a 
gists find it worth their while to visit, in pursuit of them, the plants ^ 
which are then in bloom, many of which are of unisexual species.—W. E. - 
Harr. | 
DIMORPHISM IN HYPERICINE®.— [In examining the Indian and Ma- 
layan species of this family, I have met with a marked case of dimorphism 
in Cratozylon formosum (Benth. and Hook. f. Gen. Pl. i. 166). This is 
fi Tridesmi 
aie 
S 
Otherwise if the dimorphism were complete, it would be a serious ob- - 
ioci the valves, make a passage for themselves, and appear outs 
e fl i i 8 
gestion has been made to me, and quite truly, that for the complete prot 
of Bidard’s last assertion, it requires to be shown that cereals are ue 
is, however, a general belief that the fertilization 
effected in the manner described by Bidard and Dr. Boswell Syme. ^ 
method of artificial fertilization, by drawing a rope over the heads of He E. 
corn, was proposed by Hooibrenk some years ago, and he is said to have - 
been substantially rewarded for the invention. It is now, however, 0WIDE 
to the belief above mentioned, looked upon as futile. Information upor 
the subject will, I believe, be found in the volumes of the Royal Agric 
tural Society's Journal, which I have not at hand to give references 107 
W. T. THISELTON Dyer, 
Extracts und Abstracts. 
ON RUBUS LEESI. 
By Dr. O. W. Focke, or BREMEN. x 
In the year 1846 Professor Babington described a variety of iw | 
Ideus, which he named R. Leesii, and soon after he published p^ 
a species. As such he adopts it in his new Synopsis, whilst expres” 
some doubt as to ii l . From ordinary R. Idæus it ditet 
the shape of the leaf, the simple leaves and the leaflets of its t€?" 
