234 Journal of the Asiatic Society of Bengal. [November, 1905. 
the river from one bank would be increased, while the slope to the 
other bank would be decreased. Consequently, denudation on one 
side of the river would be greater than on the other. The same 
thing would happen to all the rivers flowing on para rallel courses. 
Thus, in the area between two rivers which run on nearly parallel 
the other. Each river would, in time, force the water-shed on one 
bank back towards the next river, but, in exchange, would lose on 
r 
catchment area on one bank than on the other. This appears to 
be the case in several districts of the United Provinces with which 
I was ee 
nals are generally aligned to run along the yeien 
and in ihe following cases the canals are aligned very nea 
rivers running parallel to them on the north side :— 
(a) The main upper Ganges canal in the Al igarh District is 
ted y te nearer the Kali Naddi on its north than 
e Jumna on the south. 
(b) the _Annpshahe hewnch of the Ganges canal in the 
garh District is very much nearer the Ganges on 
pan than the Kali Naddi on its south. 
(c) The ete Sarda canal in the Lucknow District was 
d very much nearer the Gumti on its north 
han the Sai on its south. 
The fact that, at Lucknow, water from a great depth rose t 
above the surface, ’shows not only that the strata at great dept ths 
are anit but that they are continuous over very considerable 
is a very interesting fact, because it has been conclu- 
sively — that the surface strata are not continuou 
For e 
ain reasons too technical to be given e 
i tion "well can only be made where the masonry cylinder oh 
taken phe toa stratum underlaid by esr: 8 
ina por icersal of papers relating to the construction of wells, it is 
clearly demonstrated that a Opa! strata so essential to the 
success of wells are not continu 
might add that “anyone is ctically acquainted with the 
onstruction of irrigation wells knows that Colonel Clibborn’s 
conclusions are correct. 
A very difficult problem is here presented to us ; how ca? 
we account for the fact that the surface strata are clearly not 
tinuous, while those at great depths appear to be continuous! p Two 
possible explanations suggest themselves ; the first is that at great 
