3/0 Observations made on a Botanical Excursion. [Oct. 



give some idea of the temperature as compared with that of Calcutta 

 and the plains below the mountain. 



Comparision of Wooded-gully in Varus Nath. 



Alt. 2,126 ft., with Plains at Base alt. about 1000 ft. and Calcutta 

 at 9 a. m. 



Wooded-gully. Base. Calcutta. 



Temp 51.5 .... 70.1 67. 



D. P 36.7 .... 37.9 .... 38.8 



Diff. 14.8 .... 32.2 28.2 



Saturation 0.601 0.330 0.385 



Elast. of vapour.. . 0.253 0.264 .... 0.270 



Interesting as the Botany of Parus Nath proved, its elevation did not 

 produce such a change from the flora of its base as I had expected. 

 This is no doubt due to the extraordinary influence of a dry atmo- 

 sphere and barren soil. That the atmosphere of the summit is more 

 damp as well as cooler than at the base, is proved as well by the obser- 

 vations as by the vegetation ; the results of the former as compared 

 with the means of those taken below are : 



Comparison of Saddle or Crest of Parus Nath with Calcutta, and 

 with the Plains at the base of the mountain, at 3 p. m. Feb. 4th. 



Parus Nath. Plains at foot of . Calcutta. 



Temp 54° 75.5 .... 74.4 



D.P 21°.8 36.0 .... 36.5 



Diff 32°.2 .... 39.5 .... 37.9 



Sat 0.326 0.260 0.282 



Vap. c. f. 1.658 2.674 2.719 



Elast. 0.150 0.248 0.252 



Wind N.W N.W N.W. 



Sky Hazy Hazy Clear. 



Of plants eminently typical of a moister atmosphere, I may mention 

 the genera Bolbophyllum, Begonia, Ferns, JEginetia, Bisporum, Rox- 

 burghia, Panax, Eugenia, Myrsine, Shorea, Millettia, the Mosses and 

 foliacious Lichens ; which appeared in uncomfortable association with 

 such dry climate genera, as, Kalanchoe, Pterospermum, and the dwarf 

 Phoenix. Add to this list the Barberry, Clematis, Thalictrum, 27 

 grapes, Cardamine, &c, and the mountain top presents a mixture of the 



