442 Journal of the Asiatic Society of Bengal. [N.S., XIV, 
of North Coimbatore.. If we agree to the Dharwarian age of 
these rocks and nevertheless regard the Dharwars and Char- 
nockites as unrelated to one another, we are driven to accept 
the anomaly of a Dharwar outcrop of exclusively sedimentary 
origin (or at least consisting of rocks which most geologists 
would be inclined to look upon as sedimentary) occurring close 
to the Mysore region in which the Dharwars are almost 
exclusively igneous. If, on the contrary, we regard the 
Charnockites as derived from metamorphosed Dharwars, the 
anomaly disappears, for the Charnockites, in North Coimbatore, 
are much more abundant than the presumably sedimentary 
representatives of the Dharwars. The association of both 
ypes would merely therefore become once more that of 
interbedded sedimentaries and volcanics in which the latter 
vastly preponderate. 
ven in the Dharwars of the Mysore region itself, in " 
contain sillimanite. 
quartz-sillimanite schists in so far off a region as Ceylon bot 
thereby becomes quite intelligible, while, again, suPP ae 
