_ 282 Scientific Intelligence. 
the more specialized organ, dieses only for climbing, and repay in 
different plants with very various and some highly remarkable 
To this subject Mr. Gees. devoted tas 8 half of his yer 
An analysis of it must be deferred, for wan 
Near the close of the essay, under Hook-dlitbon Mr. Darwin re- 
marks ¢ at :— 
“Even some of the climbing Roses will ascend the walls of a tall 
house, if sovssid with a trellis ; how this is effected I know not; for the 
of Michigan Foss (Rosa sa Mx., &. rubifolia R. Br.), trained on a 
: : : ‘ 
A bee. 
from the light; they would, many of them , pretty surely place themselves 
under the trellis, and the istered shoots of dhe n next spring would emerge — 
as they seek the light. -We suspect this is also true of the Sweet Brier. 
GREP e eS ks SM TRE. Re 
ing may be kefetred ae to ee place, they are called peeled Bi species. 
Dr. Walsh sums up his conclusions thus 
we may construct the following almost unbroken series, from 
dawni s of epee Phyt anaes "Variety to the full development of the 
ec 
of food, even when the food-plant belongs to widely 
aistinet botanical families, is accompanied by no difference vie 
either in the larva, pupa or imago state-—Atiacus Cecropia Lin 
campa imperialis Drury, Lachnus Cary Harris, (Proc. Ent. Soc. Phil : 
I p- sey 3 and hundreds of other species. ie 
_ 2nd. Difference of is accompanied by a marked difference te a 
color of the sillep “producing secretions:— Bombyx Mori Lin., the com 
orm, 
3rd. Difference of food is accompanied by a tendency toward the ob- 
- ration of the normal dark markings in the imago.— Haltica alternata 
panied by marked, but not perfectly 
sendin ‘olrational diffe erences in the are but none vig in the 
ry. 2 
“Bth. Difference of food is accom nied by a marked and perfectly con- 
ee of the i hago legions la scalaris pate - 
