246 On the Inland Storms ofTartary. [No. 3. 



very red. Wind south and light, rising and falling with a moaning 

 noise. At 10 a. m. wind S. E. blowing very strong in squalls. Bar. 



— and oscillating about, .03 to .05 every quarter of an hour or 

 less. Ther. — . The whole horizon is now covered with a sort of 

 dark haze which is, I suppose, mostly dust. No rain. Above clear hazy 

 blue sky with very thin wreaths of scud flying to the N. W. very fast, 

 and these are thicker and more numerous towards the dark haze and 

 in the S. W. than at the zenith when they disappear. 10A. 30m. Bar. 



— Ther. — . Wind steady at S. E. Bar. oscillating .05 to .07 in the 

 squalls of wind, which are now almost of hurricane strength, &c. 

 Noon, a hurricane from S. E. roaring heavily ; the sky one mass of 

 dust mingled with spiculse of ice or snow. Impossible to look to 

 windward. Tiles and planks flying about like feathers. Our landlord 

 says that many persons are hurt and some killed in these storms. 

 Bar. oscillates much less. Wind seems to oscillate also being from 

 S. E. to E. S. E. or even East (as far as we can judge) and then coming 

 back to S. East again. 



At 1 2° 30' it fell a dead calm in a few minutes. Bar. — Ther. — a 

 slight feeling of oppression. 



At \ to 1 p. m. we heard a low roaring sound which gradually 

 became louder and at 1 the hurricane burst forth again from the S. W. 

 with a few sharp flashes of lightning (but no thunder) blowing harder 

 than before. Bar. at 1 p. m. — Ther. 



1. 30.1 



2. \ 

 2. 30 J 



At 2. > p. m. Bar. Ther. 



2. 30. J &c. &c. &c. to the end of the storm. 



13. A set of observations like this ; i. e. one or more storms care- 

 fully observed throughout, with all the details (and the more details 

 the better) would be invaluable from these countries. Notes on the 

 common dust-whirlwinds also, whatever be their size, will be useful 

 in explaining what is desired as to them. Every thing in fact relating 

 to the phsenomena of wind and its attendant clouds, electricity, &c. 

 must be of interest and probably of use. The question also of the 

 existence of any thing like the Simooms of the Sahara in the desert 

 of Cobi* would be worth settling. 



14. If any knowledge on the subject of these tempests can be col- 



* During the summer. 



