The Instruments with which the foregoing Observations are made, 

 are placed on the We>-tern Verandah of the Honorable Company's 

 Observatory, at about 5 feet above the surface of the ground, and 27 

 feet above the level of the Sea : the Thermometer was made on purpose 

 for the Observatory, and at 75degs. (the only point at which a compa- 

 rison has been made) it was found to differ insensibly from the Royal 

 Society's Standard ;— the Barometer is one of two Standards which I 

 have lately constructed, and may be depended upon to 0,01 of an inch : 

 the diameter of the tube is 0,22 of an inch ; rendering it necessary to 

 apply the correction -j-0,051 inches for capillary action, in addition to 

 the usual correction for temperature. 



Longitude 

 Latitude. . 



Zt. m.. s. 

 5 21 8 E. 

 130 4 8,5 N. 



Madras Observatory, > 

 Ut July 1838. > 



T. G. Taylor, 



C, Astronomer, 



