Dinwiddie, James2009-07-282009-07-282009-07-28http://hdl.handle.net/10222/11956This notebook kept by James Dinwiddie ca. 1796 written while in Madras contains notes on a number of topics including the mining and use of saltpetre and the mining of diamonds.enMiningSaltpetreDiamondExtracts1796NotebookJames DinwiddieMadrasText