1842.] A Seventh Memoir on the Law of Storms in India. 995 



(an error probably) may be taken, as giving pretty nearly the 

 directions of the gale at the times of observation. I have no Baro- 

 meter, but a Sympiesometer, (one of Adie's own make, which belonged 

 to the Duke of York, that was lost in the May gale of 1833) that is 

 very sensitive, and indicates relatively, all the diurnal, &c. changes ; 

 but it stands I believe from half an inch to perhaps f of an inch below 

 what it ought to do, from defect of fluid I suppose. I have never had 

 the error tested by a standard perfect Sympiesometer. 



For instance, this morning at 8h. 43m. a. m. it stood at 29.14 when 

 regulated by its attached Ther., which was at the same time at 81.8, 

 when I suppose a perfect one would have indicated 29-70, or upwards. 

 So you can make the requisite allowances, or if it were in the least 

 worth while, have the error of our Sympiesometer ascertained. 



We have so many trees about us, and in and about the Company's 

 Garden opposite to us, that the exact direction of the wind cannot be 

 ascertained. One of our trees, a mahogany one, lies with its head 

 I think somewhere in a S. S. E. direction, opposite Bishop's College ; 

 house front standing nearly due North and South. 



2nd June, 1842 Thursday very strong N. E. to N. E. by E. 



wind ; throughout the night cloudy, with some little rain 5 30 a. m. 

 Thermometer outside in the North Verandah under 80°. Inside 

 Thermometer 79° 6', attached to Sympiesometer, which stood at 28.52, 

 At 7 45 a. m. ditto weather with dark lowering clouds in the East. 

 Thermometer 81°., Sympiesometer 28.52. Outside Thermometer 81°. 

 Heavy showers of rain at intervals during the day, and continued 

 high N. E. wind ; no rain at night, of moment. 



3rd June. — Friday during the early part (night) extremely bois- 

 terous wind ; half a gale from the N. E. ; some slight rain towards 

 the morning. 5 45. a. m. inside Thermometer 79° 5'. Sympiesometer 

 28.25. 6 30 a. m. continual heavy rain, with high wind from 

 the N. W. ;* very dark, no thunder heard; and scarcely any lightning 

 seen during the prevalence, for the last five days, of the N. E. 

 breeze. 7 50 a. m. continued stormy wind N. E. to N. N. E., with 

 occasional rain ; at times seems to increase. 9 40 a. m. wind rather 

 more northerly. Stronger with heavy beating rain, and so it has been 



* Note by Mr. Earle. I think this is an error, it should be N. E. ; 



6 o 



