Abstract of Mean Pressvire, Temperature, &c. for the First Quarter of 1850, from the Register kept at Futtegurh. 



[To face page 39, Section A. 



) 



Abstract of Mean Piessure, Temperature, &c. for the Third Quarter of 1850, from Observations made at Futtegurh 



_ s applied to the barometer are — 



1st. For capacities ; and as the neutral point is 29"930, this correction is always minus. 



2nd. For capillary action, '020, which ia always plus, 



3rd. For reducing the observed temperature of tU mercury to 32° F., which is alwayo ininua. 



Futtegurh, loth January, 1851. 



