362 



Meteorology : 



[Oct. 



obtained in France ; shewing that the direction of the wind influences 

 the barometer : the results in question appear in the Annuaire de le 

 Bureau des Longitudes for 1S3G — where, from 45 years observation, 

 the following are arrived at :* 



DIRECTION OF THE WIND. BAROMETER. 



South Mean height— ,133 inches. 



South west ,118 „ 



West ,024 „ 



North west J- ,072 „ 



North 00 „ 



North east +>111 „ 



East i +,055 „ 



South east — ,066 „ 



In confirmation of these results, I may mention that from barome- 

 trical observations made during several years in England (the particu- 

 lars of which I have not at present in my possession), I had noticed, 

 that the barometer always stood higher, and had a tendency to rise, 

 with a N. E. wind ; and, on the contrary, always stood lower, or had a 

 tendency to fall, with the S. or S.W. wind — hence it was desirable to 

 know, if, during the periodical winds in India, the barometer exhibited 

 a similar variation — for which purpose the following mean heights 

 as set down in your Journal, have been reduced to the temperature 

 of 32° and have been corrected for capillary action, and for the 

 height (27 feet) so as to reduce them to the level of the sea. 



Mean height of the Barometer at \0h. a. m. as observed at the 

 Honorable Company's Observatory. 



1832 1833 1834 1835 Mean 



January 30.143 30.163 30.078 30.090 30.118 



February 30.047 30.062 30.063 30.070 30.060 



March 29.998 30.005 30.008 30.016 30.007 



April 29.927 29.941 29.945 29.927 29.935 



May 810 .829 .844 .841 29.830 



June 745 .821 .791 .835 29.798 



July 762 .804 .784 .851 29.800 



August 832 .888 .824 .845 29.847 



September... .873 .866 .875 .895 29.8/7 



October 29.949 29.951 29.901 29.938 29.935 



November... 30.088 30.044 30.075 30.071 30.070 



December.... 30.052 30.032 30.102 30.118 30.076 



* These observations were made at Paris — from others made at Marseilles during a 

 much shorter period, different results are obtained. 



