4 W. BLANFORD, WESTERN INDIA. [PaKT I. 



Tlie survey of the country here described has occupied four working- 



,. . , . seasons (1862-6G). In 1862-63, Messi-s. Wynne 



Tune occupied in sur- ^ ' ^ '' 



^^y'' and Wilkinson, who had then just reached 



India, were engaged with the writer in surveying the extreme western 



portion of the area, south of the river Nerhudda. After 1863, 



Mr. Wilkinson was engaged elsewhere, and he soon 

 Surveyors. 



after was obliged by ill health to quit the survey ; 



Mr. Wynne and the writer remaining to complete the Nerbudda and- 

 Taptee counlry. In 1863-64 the whole line of the Nerbudda from 

 Hoshungabad and Bhopal to Bagh and Burwanee was examined. In the 

 next year the north-west of the map, now published, was surveyed from 

 Bagh to Oodipoor, and in 1865-66, besides some traverses across the trap 

 area of the Deccan, the whole of East and West Berar, Baitool, and 

 the greater portion of Nimar were added to the area examined. In 

 cor^ piling the present report use has been made of the labors of Messrs. 

 Wynne and Wilkinson, of the former especially. To Mr. Wynne's 

 pencil also are due the sketches made use of as illustrations, while all 

 the western portion of the map has been compiled by the same gentle- 

 man from a number of maps of varjdng scales and degrees of accuracy. 



Chapter 2. — Previous observers. 

 As is usually the case in large districts in India, different portions of 



No general account ^^^ area, described in the present Memoii', have 



ever published before. . , i-i-n t j • i • j 



received some attention irom Indian geologists, 



although no general account of the whole by any one observer has ever 

 been published ; and the only attempt at a general description, that given 

 in Dr. Carter's ' Summary*, is necessarily a compilation of isolated observa- 

 tions of varying degrees of accuracy; 



Very many of the writers who have described portions of the lower 



Writers mentioned by Nerbudda valley and the neighbom'ing country are 



'^° ■ mentioned in Mr. J. G. Medlicott's Memoir upon 



the adjoining districts to the eastward in the 2nd vol. of these Memoii's, 



( 166 ) 



