3. Suggestions concerning the History of the Drainage 
of Northern India, arising out of a Study of the 
Siwalik Boulder Conglomerate. 
By Guy E. Pirerm, D.Sc., F.G.8., Assistant Superintendent, 
Geological Survey of India.' 
Published with the permission of the Director, Geological Survey of India. 
(With Plates I-II.) 
At the summit of the Siwalik series in India occur a set 
of conglomerate beds, containing, in many places, pebbles of 
s i i . Thev 
ve 
This paper was written in January 1917. The author was then on 
i ce 
ia, and books of 
reference. It was originally his intention to elaborate it on his return 
Th d not occur until 1 n the meanwhile 
one now published. Since Dr. Pascoe appears to 
question very fully, it seems needless for the author to attempt any more 
than he has already done. With the exception, therefore, of a few 
necessary corrections and the addition of some explanatory details, the 
paper is published in much the same. form as that in which it was ori- 
ginally written. roe ‘ : 
2 G. E. Pilgrim, Correlation of the Siwaliks with mammal horizons of 
Europe. Ree, Geol. Surv., India, XLIII (1913), p. 324. 
