GEOLOGY OF CENTRAL INDIA. 



81 



not rise higher than three hundred feet above the level of the plain. 

 Their $hape is round, approaching to conical. 



On leaving Bamra, we enter the level primitive plain, described in 

 pages 79 and 80 — and this plain is, in many situations, almost literally- 

 covered with garnets, giving to the face of the country a red aspect. The 

 precious and common garnet both occur. The former is small, and seldom 

 in perfect crystals — the latter is large, often the size of a hen's egg, and 

 is regularly crystallized in the usual manner. The rocks are still different 

 modifications of granitic rocks, with which are associated occasional beds 

 of hornblende rock, and hornblende schist — ^the first passing into sienitic 

 granite. Some of the granites are composed of quartz and felspar alone, 

 the latter being milky white, and the former semi-transparent. These 

 are arranged in large angular concretions, and have at a little distance 

 quite the aspect of calcedony. This rock is stratified, and felspar in thin 

 seams, which run parallel to the strata, occurs in it. This felspar is trans- 

 lucent, of a slightly greenish color, and easily breaks into fragments of a 

 rhomboidul form. It exhibits, in some small degree, the play of colors 

 so remarkable in the Labrador felspar. Besides the above granites, 

 composed of quartz, bright flesh-colored felspar and steatite occur, — the 

 last ingredient being sometimes wanting ; common granite is also found — 

 in this the mica, as seen in the mass, is of a brass yellow color, but when 

 placed between the eye and the light, is of a greenish straw color. Schorl 

 is occasionally met with in these granites, and in their structure they vary 

 from fine grained to large grained. 



The above rocks are continued till we approach Bandi, nineteen miles 

 south-east of Nasirabad, when we now again perceive numerous detach- 

 ed hills and hill groups — and rocks containing hornblende preponderate. 

 The rocks heretofore met with have, generally speaking, been regularly 



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