OBSERVATIONS ON THE FALL OF RAIN. 173 
Inches 
Depth of Rain that fell in March, 1827......++. + 8.2 
of which there found its way to the reservoir... 7.1 
Taken up by evaporation, vegetation, &c. tA 
Depth of Rainfrom Ist of April, 1826,toApril,1827 45.4 
of which there found its way to the reservoir... 23.9 
Lost to the reServOir ..cccsseevecevecescssens 21.5 
Norse.—The above was from a drainage of more than 
4000 Scots acres. 
(Signed,) R. THOM.” 
« Rain available for Greenock Reservoirs. 
Square feet of surface draining into Greenock 
TESETVOITS sesseeeeeeeseees Shree cere Dassessdes fhe OOO 
Depth of water which fell thereon, year end- 
ing September 30th, 1828 ....eeseceereeeeeeees 6ft. 
Cubic feet of Rain which fell on the drainage 1,088,800,000 
Cubic feet of Rain which flowed into the 
TESETVOITS ..ccccsccccscccccccccccscccccccssensces 744,594,165 
Cubic feet evaporated, absorbed by vegeta- 
TON, BFC. .ssecccrcecveerens sen sdecets sesees sesveee 344,205,835 
(Signed,) R. THOM.” 
Now, the year 1826, was the driest year in this 
country, of which we have any record. It is 
Bb 
