138 Climate of Seringapatam. [March, 



from a want of these essentials the hire of a country-boat is 100 per 

 cent, per annum, on the capital expended, or the price of the boat 

 and stores ; and the insurance of a four months' voyage is more than that 

 to England. As an example, it may be stated, that a boat that can carry 

 500 maunds of goods, will, if in constant employment, earn360rupees a 

 year, while the same boat may be purchased for 200 or 300 rupees. If 

 1 2 per cent, per annum is allowed for the interest of capital, and the boat 

 requires repairs equivalent to replacing it every five years, 360 rupees a 

 year will allow of 1125 rupees being expended in the construction of 

 the boat. For this money, the boat could be built in such a superior 

 manner, and the supply of stores made so complete, as to set at defiance the 

 ordinary risks attending the navigation of the Ganges, and the insurance 

 would in consequence probably not exceed \ per cent, per mensem. T. 



VII. — Climate of Seringapatam. Latitude 12°45' N. Long. 76°51' E. 



Being desirous of including within the pages of the Journal all the 

 data necessary for a meteorologist, to judge of the contingencies of pres- 

 sure and temperature on the whole continent of India, we extract the 

 following results of a meteorological journal, kept for two years at Serin- 

 gapatam, from Brewst?r's Edinburgh Journal of Science, No. 5. 



The original registers were kept by Mr. Scarman in 1814 and 1816. 

 They were abstracted and reduced to order by Mr. J. Foggo, Junior. 



The mean temperature of the whole year is by observation 77.06. 

 The mean at sunrise is 63°. 17 : at 3 p. m. 90°. 95 : — of the day, 84°, of 

 the night, 70°. 11. The average daily range of temperature 27°. 7. 

 The curve of mean temperature has two convex summits, in May and 

 October, corresponding with the sun's passage twice over the latitude 

 of the place. The highest temperature is 115°, and the lowest, 48°. 



The mean temperature of the river Caveri, observed every day at 6 

 A. m. and 6 p. m. is 77.2 agreeing exactly with that of the air. 



The average height of the barometer is 27.568, whence the elevation 

 of Seringapatam may be calculated to be 2412 feet above the sea, 

 assuming the sea level, 29.88, and the temperature of the intercepted 

 column of air, 78°. 



The average diurnal tide between the hour of 10 a. m. and 4 p. m. is 

 0.074 inch. During the prevalence of the south-west monsoon, the extent 

 of the variation is diminished. The monthly variation also proceeds with 

 great regularity, the whole range being 0.262. For the last three months 

 of 1816, the register was extended to the hour of 8 p.m. and the average 

 height of the barometer at that hour is 0.006 lower than at 4 a. m. 



