﻿4-22 APPENDIX. 



Every fall of rain was likewise taken, and the quan- 

 tity in cubic inches daily noted down. 



The winds were also observed, and the figures 

 o, i, 2, 3, 4, denote the force thereof. 



Here it may be remarked, that at sun-rising, there 

 is seldom or ever any wind ; but no sooner is the air 

 a little rarefied by its rays, than a little breeze begins, 

 and this generally increases till about noon, when 

 again it begins to lose its force, and dies away, from 

 the same cause. 



In order to ascertain the influence of the Moon 

 upon the weather, the mean temperature, as well as 

 the weight of the atmosphere of each quarter, is 

 accurately marked down by taking in the three 

 days preceding, and the three days after the change 

 with the intermediate day. From these, the density 

 is discovered, by the following rule given by Dr. 

 Bradely, viz. 



A, altitude of barometer ; B, altitude of thermo- 

 meter i D, density. 



— = D — or density. 



B x 350 



N-. B. In this, the mean morning density is only 

 taken. However, the mean density for the whole 

 may be found by the same rule. 



January 1, 1785. From an examination of one 

 year's observations on the influence of the Moon on 

 the mercury in the Barometer, it does not appear 

 that there is any certain rule to be laid down regard- 

 ing it. However, it may be affirmed that the direc- 



