& 



REPORT AND OBSERVATIONS ON 



the subject of this paper are introduced in the following 

 table : — 



The gauges employed at the five new places in the pre- 

 ceding table, viz., Todd's Brook Reservoir, Brink's Edge, 

 Comb's Moss, Bosley Reservoir, and Woodhead, are all 

 similar, and of a new construction. The results indicated 

 by them vary so greatly from those of other gauges in their 

 immediate neighbourhood, as to occasion great suspicion 

 of their accuracy. For instance, the gauge at Woodhead, 

 which is situated at the head of the Longdendale Valley, 

 hereafter alluded to, shows only 33 inches of rain at an 

 elevation of 1000 feet above the sea. From this district it 

 was ascertained by careful daily measurement, that 40^ 

 inches of water had actually flowed off the ground, and the 

 rain indicated by two neighbouring gauges in the same dis- 

 trict, within a distance of about 2^ miles, was, respectively, 



