396 Proceedings of the British Association 
brushes and side patches was far’ idea sab sicnous than the differ- 
ence of intensity..‘This is accounted for’ by ‘the large quantity of extreme 
red rays whieh: such a glass transmits. at the same glass gave re 
brushes with candle. light and dark brushes’ wilh daylight, i is accounted 
for by the circumstance thatthe ratio which the intensity of the trans- 
“mitted red rays bears to the. intensity of the transmitted blue Taye, is far 
larg ger with candle- light than with dayli ight. 
On the Sié\Climates of France ; by Dr. Martins. » ‘ 
“eT 
* 
ee De Martins commenced by ce that France partook of the cli- 
at es both of continental and sea-girt countries. He wished at pres- 
sie consider. six elimatorial sobivisions, viz.—l. The northeast or 5 
" » Wosgien.—2. The northwest or Séquanien.—38. That of the west or 
 Armoricain.—4. The so outhwest or Girondin; —5. The southeast or 
Rhodanien—6, and finally, ahs, ceapatibis or Provencal climate. 
n each of these subdivish enlarged ; detailing the features 
he country, the rivers, mout in-ranges, sea-coasts, geological struc- 
esof level, and state of “cultivation in each case, with 
guished. He stated that hitherto the labors of the gre Ser AS 
that the rising of the mean of the hot season above this, or the falling 
of ‘the cold much below it, were not important and to be attended to. 
On Hourly eeaiferpery Observations made at Thibet, at an eleva- 
18,400 feet; by Lieut. Srracney, R.E. 
- Great interest attached to these observations from their having been 
made during twenty-four hours at an elevation so seldom attained by” 
