480 Oil the Cirundum ^trnte froin Afin. 



PoUam to carry it to Tinncvelly, and tlie fouthern countries •, through which trgek, if tlic 

 ftone is known in Europe, I apprehend it has found its way by means of the Dutch. 



" The people on the fpot declare it is to be got in no other fituation, or place, whatever j 

 and the ftone-cutters tell me, they can do nothing without it. It pays no duty either where 

 dug up or retailed. 



*' The colour of the ftone is cither very light brown, or purplifh, in the proportion of 

 twenty to one of the latter ; but in ufe no preference is given, and they are ufed equally. 

 To an indifferent perfon the moft ftriking circumftance is its great weight. 



*• As the fpot I have been fpcaking of now compofes a part of the Cwnpany's territories, 

 the moft minute information on the fubjeiS may be acquired. 



" I felt particular fatisfaftion at having been the firft European who was ever at the place ; 

 and I fhall be much gratified, if the account given meets with your approbation. 



^ I fliall difpatch a load of the ftone in a day or two, which I got at the PoUam, with 

 the charge of it. The diftance from this place, by Namcul, is 84 miles. 



*' The charge: of 50/J. weight (f Corundum. 

 " Nine Tritchinopoly meafures of the corundum ftone weigh 501b. 



** Average and Coft at the Pits *. 

 ♦'if Madras farams per raeafure _ _ - - . 



Cooley, from thence to Tritchinopoly - - 



Ditto from Tritchinopoly - - • - - 



Pagodas 2 



« The ftone is deliTcrcd by meafures, and paid for at the PoUam in the gold fanam. 



" I am, &c. 

 «Nov. 15, 1792. " EDWARD GARROW.'* 



This letter contains very interefting' topographical obfervations on the mine. The fpecimens 

 fent were of one fort of a greyifli colour, wth a fhade of green. The entire cryftals which I 

 fek£ied among the broken ones were, of courfe, few in proportion ; but with the addition of 

 fome diftba cryftals, which Col. Cathcart, and Capt. Colin Macauley had fent me, have been 

 fufBcient to afcertain the ftrufture and form of the cryftals, of which an analytical defcription 

 will clofe this paper. I fhall, therefore, now fay nothing concerning their form, but pro- 

 ceed to give an account of the varieties of corundum ftone, which I have obtained from 



India and China. 



In the year 1786, Col. Cathcart fent mea fmall fragment of a ftratified mafs from Bengal, 

 Vrith this label : " Corundum, much inferior in price to that of the coaft." It is of a purplifti 

 hue i its frafture like compaft fand-ftones } and a confufed cryftallization appears in all 



• The abo*« h the prime coft. I have been informed by correfpondenW who purchafed fome in retail, 



tktt it was fold for about fix MUngs a pound at Madras. 



parts 



