12 GRIESBACH : GEOLOGY OF THE CENTRAL HIMALAYAS. 



various local names to the systems, or adopt the European nomencla- 

 ture for them. This I found easiest, as all or nearly all the strata 

 yielded good fossils, many of which stand in close relationship to 

 European forms. 



Long before I had an opportunity of studying the Spiti sections 

 myself, I believed that I would find the succession of strata in that 

 valley much the same as in the Niti sections, and this I found to be 

 the case. I shall have again occasion to refer to this subject when 

 discussing the Spiti sections, and may here content myself with 

 stating in few words how much I differ from Stoliczka. 



(i). His Babeh series is only partly lower silurian ; the greater 

 part belongs to the underlying strata, which I have termed the H3i- 

 manta system. (2). The Muth series is almost entirely carboniferous, 

 and the succession of beds from the Babeh to the uppermost Muth 

 series is not as stated in Stoliczka's memoir. (3). The Ruling series 

 is only partly carboniferous ; under this name are comprised not only 

 the dark Productus shales, but also some portion of the lowest triassic 

 beds, which yield a good many fossils near Ruling. (4). The lower trias 

 is represented and is in strong force in the Spiti valley. (5). The 

 lower Tagling limestone is only partly lias, the greater thickness 

 belongs to the Lithodendron limestone of the rhaetics. 



These are the principal points on which I differ from Stoliczka, 

 and having found that his nomenclature was based to a certain extent 

 on hasty and incorrect observations, it would have been misleading 

 to apply the same to rocks in other areas. 



1868. Medlicott, H. B.— The Alps and the Himalayas. Quart. 

 Jour., Geol. Soc, Lond,, XXIII, 322; XXIV, 34 — 52. 



1882. The Geology of Rumaon and Garhwal. 



Gazetteer of the North-Western Provinces of India, Vol. 

 X, in — 168. 



Both these papers are very important to the student of Central 



Himalayan geology. In the first paper the author speculates on the 



probable cause of the great flexures into which mountain chains, in 



particular those of the Alps and Himalayas, are laid, aud comes 



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