Hare on the Galvanic Deflagrator. 99 
sub-bilobo, q! 24 g ah : to m 1] 
Culm 15--24 inches high, reddish at base, leafy and sub- 
scale oblong, obtuse, white with a green keel; pistillate 
scale oblong or sub-ob-ovate, obtuse, with a short awn, 
white on the edges, and green on the keel, and about half 
the length of the fruit. The whole plant is glabrous and 
light green. 
“Flowers in May—grows in moist meadows—common. 
This plant is clearly distinct from the preceding species, 
and there is no figure corresponding to itin Schk. 
e two preceding new species belong in the same sec- 
tion with C. virescens in Ph.—the caption of the section 
being corrected as mentioned, Vol. VII, p. 274. It was 
thus corrected in the Manual of Botany, 3d Ed. 
PHYSICS, CHEMISTRY, MECHANICS AND. 
MATHEMATICS, 
Ant. V.—Leiter from Rost. Harr, M. D. Professor of 
Chemistry in the University of Pennsylvania, to B, Srutt- 
MAN, Professor of Chemistry in Yale College, on some um- 
proved forms of the Galvanic Deflagrator; on the supe- 
nority of its deflagrating power; also an account of an 
improved Single Leaf Electrometer ; of the combustion of 
Tron by a jet of Sulphur, in vapour ; and of an easy mode 
of imitating native Chalybeate Waters.— eprinted with 
corrections and additions, from Silliman’s Journal, No. 1. 
1. VII, 
After I had discovered that the deflagrating power of a 
series of galvanic pairs was surprisingly increased, by their 
