320 NEW INDIAN PRODUCTS AT THE EXHIBITION OP 1862. 



oil is thus extracted year after year, and at times there are two or three 

 holes in the same tree. The oil is allowed to settle when the clear part 

 separates from the thicker portion. If a growing tree is cut down and cut 

 in pieces, the oil exudes, and concretes on the stem and the ends' of the 

 pieces, very much like camphor, and with an aromatic odour. A tree yields 

 from 250 to 400 lbs. yearly, and the same tree will yield for several years. 

 This substance has been employed as a substitute for Balsam of Copaiba, 

 and would be useful as a varnish. It can be had in any quantities, at ten 

 rupees per maund. 



In the oil series, and amongst oil-seeds, are some deserving notice, but 

 to which we cannot at present refer, except by directing attention to the 

 Nahor oil, obtained from the seeds of Mesua ferrea, and the oils of Aleurites 

 triloba, and Rottlera tinctoria. Although the latter are not new oils, they 

 are both worthy of a better appreciation in this country. The curiosities 

 in this section are the oil of Cocoa-nut shells, and the veritable oil of 

 Macassar. Atturs and essential oils belong rather to the second-class 

 (Pharmaceutical products), which is so fully represented, that we dare not 

 attempt indicating objects of interest. 



The dye-stuffs will attract attention on account of the presence amongst 

 them of the Roum dye of Assam, Ruellia leaves, a series of ilhistrations 

 of tbe green dye of Malda, with cloths dyed therewith, and a similar series 

 illustrative of a new yellow dye, from the same locality, which can be 

 obtained in any quantity. The flowers of Trapa bispinosa ; the TTiitna 

 dye, from Akyab ; Neepa dye, of Burmah ; Kamla Goondee, of Cuttack ; 

 JacJcwood, of Akyab ; and Mug dye, of Chittagong, are amongst the 

 novelties in this section. A series of sixteen lichens are contributed from 

 Darjeeling, but these require testing before anything can be affirmed as to 

 their tinctorial properties. An interesting book is shown from Nepaul, 

 containing specimens of colours obtained from native dyes, but un- 

 fortunately barren of information. Two or three new tanning substances 

 are exhibited from Chittagong and elsewhere. 



The stimulants, whether alcoholic or narcotic, are well represented ; 

 amongst the former, we notice rice arrack, Mowha spirit, Mango whiskey, 

 prepared from the Mango fruit, and cane-juice spirits. Amongst the latter, 

 Gunjdh, Bang, and varieties of Churrus, or hemp resin. Full illustrations 

 of the manufacture of opium, with specimens of the product. Bynee seeds, 

 used as a substitute for Betel-nuts. Tobacco from a few localities, and 

 other narcotics amongst the medicinal products. 



The grains and pulses are more numerous than ever, and in connection 

 with these, Dr. Forbes Watson exhibits a series of the chief varieties, with 

 the results of his analyses attached, showing the nutritive value of each. 



Textile materials must not now be ventured upon, and the same may 

 be said of woods, of which latter there are from twelve to fifteen hundred 

 specimens. 



Amongst the curiosities of food, we have, in addition to the usual con- 



