330 



Scientific Intelligence. [No. 10, new series. 



10. Of the Hail Storms on the high land of Uttree Mullay, at 

 4,600 feet in the vicinity of Trevandrum, the following may be 

 noted. 



In 1850 March 31st at 10 A. m. lasted \ an hour, size of grapes. 

 Dry bulb. Wet bulb. Diff. 



11 a. m. 69 66° 3° 



11$ „ 67 65 " 2 



1855 February 24th 3| p. m. This Hail Storm was preceded by 

 a vivid flash of lightning followed immediately by a heavy peal 

 of thunder, and accompanied by Hail which lasted \ an hour. 

 Hail of all sizes from that of a marble to that of Pepper corn. 

 1856, March 21st, from 2^ to 3 p. m. of various sizes. 

 Dry bulb. Wet bulb. Diff. 



9 a. m. 66J° 64° 2±° 



4 p. m. 67 c 65 2 



1858, February 28, Hail from 3 to 3 J p. m. 



Dry. Wet. Diff. 



9 a. m. 60° 59° 1° 



4 p. m. 64 63 1 



1858 March 3rd, Hail from 3 to 4 p. m. 



Dry. Wet. Diff. 



9 am. 64° 62° 2° 



4 p. m. 64 63 1| 



11. On the Cardamom table lands and on Uttree Mullay at 

 altitudes of 3 to 5,000 feet, it will be observed that the wet, bulb 

 was always within* 2° or 3° of the temperature of the air, whilst 

 in the Palghat opening only 500 feet above sea, where Hail is 

 still more frequent, and although it is the " cool season" on the 

 Eastern Coast, there prevails the most intense heat and dryness. 



12. On the 2d March 1851 when in Tents at Oyacaud about 

 25 miles S. W. of Palghat at 1 J p. m., with a dry and hot Easter- 

 ly wind, and the Dry bulb at 96°, no deposition could be effected 

 with Daniell's Hygrometer at 36°,f after an immense expenditure 



* Owing perhaps to at that altitude the prevalence of a moist stra- 

 tum of air, caused by the ascent of the moist Sea breezes at those hours 

 in the afternoon. 



t Col. Sykes notices a depression of 61 c on the 16th February 1828 

 at Dound in the Deccan. Philosophical Trans, for 1850. 



