NILGHIKI HILLS. 217 



lu 1848 Captain Ouchterlony, of the Madras Engineers, published in 



the Madras Journal of Literature and Science* 

 Captain Ouchterlony. 



a valuable Memoir containing such information 



on the Geology and Statistics of the Neelgherries as he had collected 



during his detailed survey of the hills. This Memoir contains but 



little geological information, however, except such as is of economic 



importance, and in his description of the hills, Captain Ouchterlony 



appears to have fallen into the same errors as Dr. De Benza and some 



others of his predecessors. 



Finally, Mr. Adolphe Schlagintweit published during the last two 



years-|- a few remarks on the dkection of the faults 

 Mr. A. Schlagintweit. 



and joints in the rocks of Mysore and the Neelgher- 

 ries taken in connection with the foliation and cleavage of the same rocks. 

 Mr. Schlagintweit's stay in the Neelgherries was, however, too brief, to 

 permit of his making any detailed examination of the country. 



Of the details of the hill Geology, therefore, much information 



^^. , . ,, , had been collected previous to the commencement 



Objects 01 the present ^ 



^"''■*''^y- of the present Survey, but owing to the rapid 



advance in Geological knowledge generally, and especially in that of 

 Indian Geology during the last few years, it was highly desirable that 

 this information should be re -tested, and the whole, with such new facts 

 as might be collected during the present Survey, brought together into 

 a general report, and recorded in a permanent form in this series. With 

 this preface we shall proceed to the immediate subject of this report. 



Geological Characters. 

 The rocks constituting the Neelgherry Hills, and indeed those of 



Rocks principally of ^^^ ^°^^^ Western part of India generally, belong, 

 foliated structure. ^^j^j^ ^ ^^^^ ^^^.^ exceptions, to the schLstose or. 



* Old Series, Vol. XV., So. 34. 



t Journal Asiatic Society, Bengal, New Series, No. LXXXVI. 



