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620 



PHILOSOPHICAL TRANSACTIONS. 



[anno 1693-4. 



This county, and particularly that part of it where I live, is generally esteemed 

 to have much more rain than other parts ; for by reason of the very high grounds 

 in Yorkshire and the eastern parts of Lancashire, the clouds driven hither by 

 the S. and S. W. the general winds in this part of the world, are oftener stopped 

 and broken and fall upon us than such as come by an E. or S. E. wind, which 

 broken by the hills are generally spent there, and then little affect us ; and 

 this is the reason that Lancashire has often considerably more rain thain York- 

 shire. 



The Table of Rain. 



The above mentioned method of estimating rain by pounds to those of my 

 family gave a sufficient idea of the proportions of the falling rains, and the wet- 

 ness of the different seasons, though they knew not how high it would raise the 

 water in a cylinder on a base equal to my tunnel ; but to inform others of this 

 with little trouble, it must be observed that in the table the pounds, and parts 

 are doubled, and these give both the quantity of half pounds, and the height 

 in inches, according to the general way of estimating the quantity of rain ; 

 only with this difference, that for the half pounds only the last figure is a deci- 

 mal fraction, and the other the number of the half pounds ; and for the height 

 the last two figures denote the decimal fraction of an inch, and the remainder 

 the height in inches, so near the truth, that they only fall short of it 1 inch in 

 200, which defect is easily supplied. To this I need only add, that the numbers 

 on the right hand are the .sums of all those in the same line of the whole 1 5 

 years ; so that the last of them shows the sum both of the half ounces that 

 have fallen during that space of time, and the height the water would have 

 been raised in that time also. Thus, for example, the number for the sum of 

 all the rain in the 15 years being 62j20, therefore according to what has been 

 said 6212.0 is the number of half pounds that fell in the compass of the tunnel 

 during those 15 years^ and 621.20 the height it would have raised the water 



