Appendix K. 



ACTINOMETER OBSERVATIONS. 



459 



Series II. — Khasia Mountains. 



Place. 



Month. 



Elev. Bar. 



B. P. 



Tm.Air. 



Elev. 

 by B. P. 



Diff. 



Churra 



Amwee . . . 

 Nurtiung . 

 Nunklow . . 



June 



September 

 October 

 ( July 



4,069 ft. 

 4,105 

 4,178 

 4,688 



204-4 

 2051 

 2050 

 203-9 



70-3 



67-7 

 700 

 69-8 



4,036 ft. 

 4,041 

 4,071 

 4,333 



— 33 ft. 



— 64 

 —107 

 —355 



Kala-panee . 



Myrung . . . 

 Syong 



J Jun., Jul., ) 

 \ Sep., Oct. j 



July 



July 

 j Jul., Aug., ] 

 ( Oct., Nov. j 



- 5,302 



5,647 

 5,725 



202-2 



201-9 

 201-8 



65-8 



69-4 



70-8 



5,202 



5,559 

 5,632 



—100 



— 88 



— 93 



Moflong . . . 



• 6,062 



201-4 



64-8 



5,973 



— 89 



Chill ong 



November 



6,662 



201-2 



62-8 



6,308 



—354 





Mean 



5,160 ft. 







5 -01 6 ft. 



—143 



K. 



ACTINOMETER OBSERVATIONS. 



The few actinometer observations which I was enabled to record, 

 were made with two of these instruments constructed by Barrow, 

 and had the bidbs of their thermometers plunged into the fluid of 

 the chamber. • They were taken with the greatest care, in conformity 

 with all the rules laid down in the " Admiralty Guide," and may, I 

 think, be depended upon. In the Sikkim Himalaya, a cloudless day, 

 and one admitting of more than a few hours' consecutive observations, 

 never occurs — a day fit for any observation at all is very rare indeed. 

 I may mention here that a small stock of ammonia-sulphate of copper 

 in crystals should be supplied with this instrument, also a wire and 

 brush for cleaning, and a bottle with liquid ammonia : all of which 

 might be packed in the box. 



Actine 6*568. Time always mean. 



