Botany and Zoology. : 125 
13. Gold and Silver mines of Montana Territory.—The amount of gold 
and silver for 1865 from the mines of Montana Territory, as stated on 
official authority, will be sixteen millions of dollars. The region was a 
wilderness in 1862 
III, BOTANY AND ZOOLOGY. 
1. On the Movements and Habits of Climbing Plants; by Cuarizs 
Darwin, (Notice continued from the September number, p. 282.)— 
which those of the leaves of the Sensitive Plant may be taken as the _ 
type. Twining stems, as has been seen, strikingly exhibit the first, and 
their coiling around a support is a consequence of it. 
Tendrils for the most part execute both kinds of movement. They re- 
Tespects, some revolving freely and sweeping wide circuits, some less evi- 
dently, and some, like those of Virginia Creeper, do not revolve at all, but 
turn from the light to the dark. But whether a tendril is the homologue 
a leaf, or of a stem (or of a peduncle which is the same thing) ap- 
sity of gifts in one and the same family, or even in species of the same 
genus, is very remarkable, as may be seen especially in the Bignonia 
Family, the Grape Family, &c. So, also, the tendrils are commonly 
in their endeavors by the revolving of the internodes of the stem, 
_ twiners, root-climbers, and various combinations of these diverse modes. 
*s however, will first consider the tendrils of the Gourd, and Passion 
er thiilice regarding them as typical and simple representatives of 
-climbers. iy nas 
Passiflora gracilis, a delicate annual species, lately introduced into the 
gardens, of sis cindent cultivation, one which differs from most of its rela- 
i « internodes having the power of revolving, is said by 
Mr. Darwin to exceed all other climbing plants in the rapidity of its 
Movements, and all tendril-bearers in the sensitiveness of its tendrils. Tn 
the latter respect it decidedly surpasses our Echinocystis ; but it is nearly 
if not quite equalled by Sicyos, in which the coiling upon contact was 
as frst noticed as a visible movement. The revolving internodes, when in 
