• OF THE ROCHDALE CANAL. 253 



This the gage at Stubbins sufficiently demon- 

 strates. In every year the greatest fall of rain 

 was found there; and it is also shewn in a 

 general way by a comparison of the monthly 

 quantities in the different gages. 



The gage at Sowerby Bridge shews, that the 

 effect of the current of air and vapour having 

 passed the mountain, has nearly if not entirely 

 ceased. Though two years are too short a 

 period to establish a fair comparison, yet it ap- 

 pears very probable, that the rain at the Bridge 

 will not maintain, on an average, a quantity 

 equal to what will be found at Moss Lock. Thus 

 the increased quantity of rain given out on 

 imssing the hill has gradually fallen off" from 

 some point of the descent, where it was a 

 maximum, till in about 6 miles it is reduced 

 to that at Moss Lock, or probably rather 

 below it. 



It is to be hoped tliat the Committee will 

 continue their observations, when future expe- 

 rience will either confirm or correct the preceding 

 inferences deduced from too limited a series. 



