1878.] Autograpliic records of JSFor^ -Wester Storms. 103 



tingly said that the coins belong to the mintage of the Arracan kings, 

 and they were all Buddhists. Of the three names given by Fryer the 

 last (c) has been incorrectly read by Babii Pratapa Chandra Ghosha. It is 

 unmistakeably Sri Vljaya, and not Sri Vikrama. None of the names, how- 

 ever, occur in Mr. Baton's list of Arracan kings published in the sixteenth 

 volume of the Researches. 



Mr. Blochmat^N" also read the following extract from a letter from 

 Dr. Mitra announcing the discovery of a new Era : 



" I have made a grand discovery, nothing less than a new era — that of 

 Lakshmana Sena. It is still current among the Pandits of Tirhut. My 

 travelling pandit, now at Darbhangah, is collecting information on the 

 subject. It will settle the age of the Senas beyond all cavil, upsetting at 

 the same time Cunningham's date of the Pala kings of Bengal." 



Mr. H. F. Blanford exhibited two autographic records of recent 

 Nor' -Wester storms which occurred on March 8th and 14th ; the one accom- 

 panied by a slight fall of rain, the other without rain. The records con- 

 sisted of the photographic traces of the barograph, and the dry and wet 

 bulb thermometers ; the direction and movement of the wind, registered by 

 a Beckley's anemograph ; and the trace of Beckley's hyetograph showing 

 the rainfall. As all the traces are continuous they shew all the changes 

 that took place during the storms and afford the means of correlating these 

 with each other. 



The two sets of traces agreed in many points. In both the evenly- 

 waved line which marked the diurnal barometric tides, was suddenly inter- 

 rupted just before the storm by an abrupt rise of pressure. This was fol- 

 lowed in both by a rapid veering of the wind from S. S. W. to West in one 

 case, and through West and North to East in the other, and a considerable 

 increase in its velocity ; and in both storms also by an abrupt fall of the 

 wet-bulb thermometer through several degrees (10° in the rainless, and 9° in 

 the rainy storm). But, whereas in the rainy storm the dry-bulb thermo- 

 meter also fell through 8°, in the rainless storm it rose as abruptly through 

 4^°, this change, be it observed, occurring at 10 p. m. At the temperatures 

 observed these changes in the rainless storm of the 14th March, indicate a 

 fall in the humidity of the air from 83 to 34 per cent., the whole of which 

 was accomplished in half an hour, the greater part indeed within about 10 

 minutes. 



The rise of temperature in a storm which is accompanied by little or 

 no rain, though rare, is not now recorded for the iirst time. A similar 

 occurrence took place at Calcutta on the 20th May 1870, between 7 and 10 

 P. M., and was described by Col. Tennant in the Proceedings of the London 



