164 Remarks on ike Quantity of Rain at Different Heigkts. 



The least monthly difference was in April, 1855, — 0.44 inch, 

 and the least in any one storm, was in July, 1855, — 0.02 inch, 

 the storm was about twelve hours' duration, and the wind, 

 North-East, and light, the air on the previous day was damp, 

 and but little wind. The quantity for the six cooler months, 

 was 26.22 inches in the upper, and 22.94 inches in the lower 

 gauge, showing a difference of 6.72 inches. The quantity for 

 the six warmer months, was 16.69 inches in the upper, and 

 23.35 inches in the lower, a difference of 6.66 inches, showing a 

 difference of only 0.06 inches between the warm and cool months. 

 There were seventeen storms in which the atmosphere preced- 

 ing their commencement was moist, when the difference was 

 3.76 inches; and thirty-eight storms, in which it was dry, with 

 a difference of 8.24 inches. The difference in thirteen thunder 

 showers was 2.98 inches, in a quantity of 5.35 inches in the 

 upper, and 8.33 inches in the lower ; and in a quantity of 

 4.05 inches in the upper, and 4.75 inches in the lower, there 

 was a difference of 0.70 inch, when there was little or no wind. 

 The general result for the twelve months is 32.90 inches in 

 the upper, and 46.29 inches in the lower gauge, a difference of 

 13.39 inches. Of the storms, thirty of them occurred with the 

 wind easterly, and the difference in quantity was 6.98 inches ; 

 eleven of them, with westerly winds, with a difference of 

 1.40 inches; nine, with the wind varying from W. to E., and 

 vice vend, with a difference of 2.60 inches ; two, with south 

 wind, and a difference of 0.21 inch ; four, with a gale from N.E., 

 with a difference of 2.01, and one varying from S.W. to N.E., 

 and a difference of 0.86 inch. The greatest difference for the 

 time of continuance, was in one of about forty-five minutes' 

 duration, with but little wind, when it was 0.37 inch in 1.28 

 in quantity ; the wind was West. 



1 hese facts are thrown out for the consideration of observers, 

 in the hope that some system may be adopted by which more 

 accurate observations will be secured. 





