ex Proceedings of the Asiatic Soc. of Bengal. [N.S., XVII. 
the table. It is made chiefly of aluminium, weighs 18 gr. (14 
tolas) and costs about Rs. 15 to make in Agra; and in common 
with Mr. Dines’ recorder is capable of practically the same 
degree of accuracy in its measurement as those used on the 
b, 
Fie. 13. 
Continent of Europe, which cost about £30 each, weigh about 
- aid are correspondingly expensive to send up from the 
fact that they require comparatively large balloons to carr 
them. The Fig. 13b shows the front and back of the instru- 
