100 PHILOSOPHY OF STORMS. 



It rained moderately hard on the nights of the 26th and 

 29th of May, and first of June, and on the afternoon and 

 night of the third, and all day on the sixth, till three o'clock. 

 There was but little rain on the other days. The wind was 

 steady all this time and two days before, from E. N. E. and 

 east by north quite strong on the evening of the 26th and 

 morning of the 27th ; all day of the 30th and 31st, and first 

 of June, and the morning of the second, and all day the 

 6th, till six or seven, P. M., when it died away and turned 

 round to south east. The wind, however, got back to north 

 east again on the seventh, with a shower at four, P. M., and 

 did not clear up till the 8th, and even then deep columnar 

 or pyramidal clouds were seen forming to the south east 

 and south, with rain descending from their bases. 



By order of Joint Committee, &c. 



THIRD CIRCULAR OF THE JOINT COMMITTEE ON METEOROLOGY. 



PHILADELPHIA, June 27, 1836. 



110. The Joint Committee "on Meteorology," appointed 

 by the American Philosophical Society, and the Franklin In- 

 stitute of the State of Pennsylvania for the promotion of the 

 Mechanic Arts, being very desirous to ascertain the bounda- 

 ries of the great storms of rain which traverse the continent 

 of North America, as also the direction of their motion and 

 their velocity, with the direction and force of the wind in 

 those boundaries, take the liberty of requesting you to give 

 them the particulars of the storm which has just terminated, 

 being the second long easterly storm which has occurred here 

 this summer. When the rain commenced at your place; in 

 what direction the wind blew during the rain; and, if possible, 

 how, and when it changed ; whether it was violent or gentle, 

 and whether it and the clouds moved in the same direction 

 or not ; in what direction the upper clouds moved as well as 



