Astronomy. 465 
of the wseide of the leaf, and the situation of the stomata, is 
most unexpec 
(7.) Since the decomposition of carbonic acid also takes effect 
under the yellow and red rays mainly, and in the upper rather 
than the lower face of the leaf, the relation between these two 
capital functions of foliage appears to be intimate and is rapa. 
eayh worthy. 
. Herbarium.—The Herbarium of a veteran Europe a ‘Bo- 
Sis, one of much importance, is offered for sale, a Ri she? 
wishing to see to its satisfactory pd ea during bi ife-time, if 
possible. Particulars may be obtained from the maior of this 
notice upon enquiry addressed to the editors of this Journal 
A. G. 
Ill. Asrronomy. 
light, Dewees upward and to the heres Its highest points were » 
from 30° to 40° in altitude. A white aurora, consisting of bright 
stre camer, Pils sap simultaneously, sie extended round to the 
northeas 
The crimson aurora was examined with the spectroscope at six 
o'clock. The instrument used was a single gl sm spect 
Scope, made Duboscq of Paris. On directing the slit toward 
brilliant streame mentioned, a bri 
ed, consisting of five well-marked lines. A millimeter scale 
attached to the instrument was then illuminat th e, 
the auroral lines being readily measured, even when the numbers 
on the scale were aie enough to be read distinctly. ium 
* Professor Newton informs me that he observed an go ea sed push 
of five or ten minutes lower 
of evich pede pes Paeghiorbene sy cine ibiee: that of the white, it would seem as if 
his sak een aoe thee ak Gas wh the red being most remo 
