302 Scientific Proceedings, Royal Dublin Society. 



contributed to the records of the South African rocks, and the 

 Brothers Blanford 1 , Dr. Oldham 2 , his son, E. D. Oldham 3 , Dr. 

 Waagen 4 , Messrs. Fedden*, Medlicott 6 , and Theobald 7 , Ball s , 

 Dr. King 9 , and Dr. "Warth 10 , have dealt with the central India 

 Sinde and Salt Eange boulder deposits, referred to the Talchir 11 

 horizon, which their colleague, Mr. Griesbach, CLE., found again 

 near Herat, in Afghanistan, when attached to the late Boundary 

 Commission. 



In the Salt Eange I mapped the beds, but Mr. Theobald 

 secured the first striated boulder from them, Dr. Oldham and 

 Mr. Fedden having performed similar service as regards Dr. 

 Blanford's original Talchir boulder beds. 



Not long since I was able to exhibit to this Society, and after- 

 wards at the British Association in Birmingham, one of the most 

 perfect of the Salt Eange facetted pebbles (now in the Museum of 

 Trinity College). Others were shown at Birmingham and in 

 London by Dr. Blanford, and others still are figured in the 

 Eecords of the Geological Survey of India, parts 1 and 3, 1888. 



All of these boulder beds, from anything I have myself seen or 

 read, present more of dissimilarity than resemblance to the later 

 glacial accumulations with which we are so well acquainted, chiefly 

 in their more regular stratification or inter-stratification compared 

 with the recent deposits, their entire aspect suggesting something 

 different in their conditions of formation. Their base is usually a 

 dark green or blackish silt weathering olive, and often filled with 

 igneous or crystalline boulders of various sizes, from some feet in 

 diameter to mere pebbles, amongst which I often found it difficult 

 to obtain any with distinct striatum, though most perfect examples 



1 Blanford's Q. J. C. S., xxxi., G. S. Ind., Brit. Assoc. Report, 1873, Bee. G. S. 

 Ind., vol. ix., p. 79 ; xx. p. 49. 



3 Oldham, M. G. S. L, vol. iii., vol. ix., Art. 2, p. 30. 



3 Oldham, jimr., Bee. G. S. Ind., xix., p. 39, pt. ii., p. 127. 



4 Waagen, Bee. G. S. Ind., 1878, pt. i., p. 22, xix., xxi., p. 22, p. 89. 

 . 5 Fedden, 1872, Bee. G. S. Ind., viii. p. 2. 



6 Medlicott, Bee. G. S. Ind., v. xix., p. 3, p. 131. 



7 Theobald, Bee. G. S. Ind., vol. vii., p. 86, 97. 



8 Ball, Bee. G. S. Ind., vol. vi., p. 28. 

 "King, Bee. G. S. Ind., xxi., p. 116, ft. note. 



^ Warth, Bee. G. S. Ind., vol. xx., p. 117; xxi., p. 34. 

 "Man. G. S. Ind., pt. 1, p. 109. 



