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1922.] The Ninth Indian Science Congress. LCS. 19 
is generally looked upon as an impure mixture of diaspore 
(Al,O, . HO) and gibbsite (Al,0, . 3H,O) ; and it is less hard and 
less dense and more soluble than the Jammu material. It 
seems probable that, in the ordinary processes in use for the 
manufacture of aluminium, ordinary bauxite is more adaptable 
than the Jammu bauxite, but regarding this matter enquiry is 
still being continued ; for it seems a pity that such a rich ore 
should Jie idle for want of a suitable process being available 
for converting it into the metal. Failing this, however, there 
are many uses to which it can be put that I need not trouble 
you with here. For some of these processes a hydro-electric 
installation close by in the gorge of the Chenab River, where ex- 
cellent facilities exist, would be desirable. The locality has al- 
ready been under examination from this point of view. 
From a number of analyses of foreign bauxites collected 
together by Mr. C. 8S. Fox, of the Geological Survey of India, 
for his Memoir on bauxite now in preparation, and kindly 
furnished me by the Director, it is of great interest to note 
that, of all the bauxites of the world, those from many parts 
of Southern France, especially from Villeveyrac, Les Baux, 
Herault, Thoronet, Gardanne (Bouches-du-Rhone), La Brasque, 
as well as some from Dublin, Ireland, and perhaps from 
Wochein (now apparently) in the corridor between Italy and 
Jugo Slavia) alone have a chemical composition similar to that 
of my Jammu bauxities, that is to say, having an alumina per- 
centage as high as 70 to 80 and a water percentage in the 
ritic origin in Peninsular India, I can hardly venture in this 
address. I have not seen Mr. Fox’s conclusions: so I must 
confine myself to suggesting that the very late age generally 
ascribed to the high-level laterites of India (because they are 
! Bull. Soc. Geol. France, Vol. XV, 1887. 
2 Mem. Geol. Surv. of India, Vol. XXVI, 1896. 
