AT NAGPUR, &c. I99 



the basalt, at the foot of the hill of SUdbaldi, of gneiss in the city, (the 

 stone used by the natives in small quantities,) the disintegrated rock, for 

 gravelling the roads, and one quarry of sand-stone at Silwara, and another 

 at Kamti. A slab of marble was occasionally cut out for images 

 at Korari, and a part of the same rock was sometimes burnt for 

 fine whitewash ; and with these exceptions, I do not remember any 

 of the mineral productions of Nagpur being converted to use. 



SITABALDI SPECIMENS. 



The specimens marked No. 1* are from the quarries west of the hill 

 of Sitdhald'i: the basalt is here exposed the whole height of the hill, and 

 presents the appearance of strata by the alternation of compact and porous 

 basalt. The compact rock forming strata eight or ten feet, and the po- 

 rous basalt of one, or one and a half foot thick. 



No. 2 (A) All these specimens are from perpendicular fissures in the 

 basalt. The fissures are from one-eighth of an inch to two or three inches 

 in width, extending irregularly from the top to the bottom of the hill, and 

 the basalt adjoining the fissures is commonly coated with a thin layer of 

 opal, as in one of the specimens. No. 1 



No. 3 (B) The eastern side and part of the top of the hill is covered 

 with wacken boulders, those on the surface being small ; but some exposed 



near 



* Basalt, compact and porous. 



" The rock of SUdbald'i is a composition of porous Basalt passing into Amygdaloid and 

 Nodular Wacken." — Dr. Voysey. 



(A) Calcedony— Calcedony and Rock Crystals — Calcedony, coated with green earth — Calc. 

 Spar, in thin layers. 



(B) Boulders of Wacken. 



