PREVIOUS OBSERVERS. 1 S3 



Western portion of the volcanic district to which belong in an 

 easterly direction the K6h-i-Tafd£n and Koh-i-Sultin described in 

 the present Memoir. 



Dr. Bellew who accompanied General Pollock's mission to Seistin 

 in 1872 has written some interesting descrip- 



Dr. Bellew, 1872. ' . & r 



tions of that province. 1 

 The physical geography of the same region has also been dis- 

 cussed by Sir H. O. Rawlinson in his " Notes on Seistan." 2 



A few details of scientific interest are given incidentally in 

 .. „ General MacGregor's u Wanderings in Baloch- 



MacGregor, 1877. . ° - , 



istan" (London, Allen and Co., 1882) in which 



he describes a journey performed in the company of Captain 



Lockwood during the year 1877. The route which they followed 



largely coincided with the one travelled over by me. 



The members of the Afghan boundary commission of 1884-85-86 



marched first from Quetta to Nuskhi : but 

 C. L. Griesbach, 1884. . . . . . , . „ „ 



beyond this point the route they followed ran 



north of the one which I visited. The geological features of the 



road from Quetta to Nushki, and in the neighbourhood of the latter 



place, have been described by Mr. Griesbach in the Records of the 



Geological Survey. 8 



In Lord Curzon's " Persia and the Persian Question " (London, 

 1892) a very useful resume is given of the knowledge gathered up 

 to the date of publication of the book, concerning the eastern dis- 

 tricts of the Persian Empire. 4 



In 1893-94, Colonel Sykes and Major Brazier-Creagh performed 



Brazier-Creagh and a j 0urnev through Eastern Persia from Ch^hbar 

 Sykes, 1893-94. on the Mekra*n Coast up to the region imme- 



diately adjoining the one dealt with in the present Memoir in the 



1 " Record of the March of the Mission to Seistan under the command of Major General 

 F.R. Pollock, C.S.I.," by Surgeon H. W. Bellew (Calcutta, 1873). 



'* From the Indus to the Tigris " (London, 1874). 



* Journ. Royal Geographical Society, Vol. XLIII (1873), pp. 272-294. 



» " Afghan Field-notes," by C. L. Griesbach. Rec. Geol. Surv. Ind., Vol. XVIII (1885), 

 PP. 57M> 



4 Vol. I, pp. 223-244 ; Vol. II, pp. 237-267. 



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