24 



lustituto In the Direetur of Mustuuis at Taipill^^ with letter, dated 

 the 22nd Febniai'v, 1905, iu accordance with the suggestions made in 

 the previous report, dated the 27th September, 1904, on this subject. 



The investigation has shown that this corundum, although of 

 unusual character, is likely to be of value for abrasive purpose, but, 

 before further action can he taken, it will be necessary to know what 

 fpiautity i.s available and the approximate price at which it can be 

 placed on the market. 



I shall l>e glad to receive infoi'ination upon those points and, if 

 possible, to be placed iu communication with a tirm willing to woi'k 

 the deposits in Perak. 



I have, etc., 



WYNDHAM K. DUNSTAN. 

 H.E. THE High Commissionek. F.M.S., Singapore. 



SECOND REPORT ON CORUNDUM FROM PERAK, 

 FEDERATED MALAY STATES. 



By Professor WYNDHAM R. DUNSTAN, ji.a., k.k.s., 

 Director Imperial Ix.stitute, South Kensington, London, S.W. 



In accordance with the recommendations made in the previous 

 report (dated the 27tli September, 1904) on corundum from Perak, 

 further samples of the mineral were forwarded to the Imperial Insti- 

 tute by the Director of Museums, Taipiug, Perak, iu order that the 

 material might be submitted to manufacturers for technical trial. 



DESCKIPTION OF SAMPLES. 



The samples consisted of (1) 18 lbs. of selected coiiindum pebbles 

 which were thought to be specially suitable for the preparation of 

 l>earing for the " movements " of clocks or watches, and (2) about 

 •5 cwt. of ordinary corundum. 



The larger consignment consisted of pieces of corundum of rather 

 irregular size, which had a (pumtity of dust and clayey material 

 a^lhering to the .-iurfaces. The quality of the samples appeared, how- 

 ever, to Ije equal to that of the previous specimen, about 95 per cent. 

 Ijeing genuine corunduui. 



The smaller sample, supposed to consist of corundum of superior 

 quality, was in smaller pieces, but was practically identical with the 

 main bulk. 



COMMERCIAL VALUATION. 

 Samples of the two consignments were submitted to a firm of 

 mineral brokers, who reported tliat the small pebliles of corundum 

 would not fetch a higher price than the large consignment. This firm 



