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Reports by the juries on the subjects in the thirty classes into which the exhibition was divided : Exhibition of the Works of Industry of All Nations, 1851
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Class IV.]

Dii. ROYLE’S COLLECTION—GUMS FROM COIMBATORE.

16. Guggilam ( Vatica tumbugaia ); from Canara andVizagapatam (p. 876).

17. Tendoo resin ( Diospyros sp.); from the Rujpootanastates.

IS. Gaup resin, obtained from the Gaup tree ( Embry -opteris glutinifera) ; from Bhagulpore.

19. Mekae-sta Dhoona, or Kerelu resin ; from Assam .

20. Odina resin, a resinous substance obtained from theOdina Wodier; from Calcutta and from Meerut.

21. Xareeda jegota {Eugenia jambulana) ; from Viza-gapatam.

22. Olibanum , saleh gond, L t aba\\(Boswellia thnrifcra);from Chota Nagpore, and Patna.

23. Cumbi resin, or Dikamali ( Gardenia lucida ); fromBombay.

24. Dammar ( Dammara orientalis) ; from Malacca ,Java, Sumatra , and Borneo.

25. Jilladi pulu ( Calotropis gigantca); from Vizaga-patam.

26. Ainmoniaeum; imported from Arabia.

27. Assafcetida (Narthax ussafeetida) ; imported fromPersia and Sindh.

28. Bdellium (Amyris commiphora , BalsamodendronAqallocha). Of this two or three varieties are exhibited :the solid gum resin, and an oleo-resin or balsam, said tolie obtained from the same tree; the former is frequentlymet with in commerce, being falsely called “myrrh,”and sometimes under the name of “ galbanum.”

29. Myrrh ; imported from Africa through Arabia, &c.

30. Dragon’s-blood; imported from Aden, also fromBorneo.

31. Gamboge; from Singapore, Mysore , Canara, &c.

32. Camboley (Morns indica ); from Paulghat.

34. Manudi jegota ( Mangifera indica ).

35. Dadinia jegota (P union granatnm) ; from Vizaga-patam.

36. Benzoin (Styraxlunzoin) ; from Sumatra ; specimens■of a similar resin, also called benzoin, are contributedfrom Malabar and Canara.

37. Storax ; from Rajpootana states.

38. Turpentine (Finns Khasynna) ; from Churra Poon-jee, in the Dacca division, and from Ullwar.

39. Moochnis (Bombax heptaphylla), a gum; from Cal-cutta bazaars.

41. Manjegota (Ficus indica ) ; from Vizagapatam.

42. Atti jegota (Ficus racemosa) ; from Vizagapatam.

43. Xepalapi pulu (Jatropha curcas) ; from Vizaga-patam and Ganjam.

44. Coorg resin, a pale green and very excellent resin ;from Coorg, contributed by His Highness the Ka.tah ofTjiavancoue. It seems to deserve further inquiry andexamination, as it might probably be well adapted for

! varnishes, &c.

Besides these, a very considerable number of otherIndian resins, gums, and gum resins, is included inDr. Hoyle's extensive collection of the raw produce of, India ; amongst these are many of the preceding ones, andalso the following:—

45. Galbanum; from Surat .

46. Cherry gum (Primus pudd>m); from Surat .

47. Sem ke gond, or gota gond (Bauhiuia Vahlii);from Deyra and Kajpore.

48. Labdanum, or ladun (Cistus ladaniferus) ; from; Surat .

49. Mastic , or mustagee (Pintado, lentiscus) ; fromCaubul.

50. Scammony, or sukmoonya (Convolvulus scarn-monia) ; from Surat .

51. Kunnee gond, or jingun ke gond (Idea resinifera);from the Khera Pass.

52. Toon ke gond ( Ccdrela toond).

53. Sohunjue ke gond (Moringa pterygospermd ).

According to Mr. Thomas, the “ gum” of Coimbatore

is a mixture of various gums and resins: he mentionstwenty-four different plants, the natural exudations ofwhich are collected; and he observes that they are saidto be nearly all collected promiscuously, and sold in theaggregate as gum—the mass being, of course, very im-pure ; but that, when dissolved in a large quantity ofwater, and strained through a fine cloth, it yields a solu-tion from which a good and very adhesive gum may beobtained by evaporation. The plants from which thesevarious substances thus associated together are collected,

! are, according to Dr. Wight—

Vilvey pissin - -

Avarum pissin -Vullam pissin -Yel Vaila marum —Vaypum marum —Mali marum — —

Curvaiala marum -Ellipie marum -Yellandie marum -Murungoo pissin -Kerray vaugay marumVellay nagah marum -Choar Kullie marum -Mullee vemboo —Vellay bootnllic -Vengay marum —Kodawah porsh -('at oolugoo marumCarabemboo marumYunny marum —Curun Gallie marum -Yidali vullie marum -Wadallee marum -Peru marum — —

Woody marum -Xarvallie marum -

iEgle marmelos - -

Cassia auriculata -Feronia elephantum -Acacia ferruginea - -

Melia azadirachta -

Mangifera indica - -

Acacia arabica - -

Bassia longifolia - -

Z izy phus j uj uba - -

Moringa pterygospermaAcacia odoratissima —Conocarpus latifolia —Soymeda febrifuga ? -

Melia azadirachta -

Sterculia urens — —

Pterocarpus marsupiumChloroxylon SwietcniaBombax malabaricum -Garuga pinnata - -

Prosopis spicigera -

Acacia sundra - -

Vachellia farnesiana -Acacia catechu - -

Ailanthus exceUa- -Odina Wodier — —

Cordia liothii - - -

Good arable.

Brown and soft.

Good arabic.

Inferior.

Tolerable.

Inferior.

Inferior.

Inferior.

Xot a true gum.

Soft, difficultly soluble.Tolerable.

Tolerable.

Tolerable.

Inferior.

Inferior tragacanth.Inferior kino.

Inferior.

Good colour, but inferior.Inferior.

Good arabic.

Very good arabic.

Soft, red, inferior.Inferior.

A resin.

Tolerable.

Inferior.

From this list it is evident how much the value of thegood gum must be deteriorated by the inferior gums andresinous matter mixed with it: a little care in the collec-tion, only the better sorts being chosen, would be amplyrepaid by the increased value of the article.

The very remarkable wood-oils and native varnishes ofIndia , obtained from various species of Dipterocarpus ,belong properly to the “resin” series, and may there-fore be mentioned here in connexion with the balsamsand oleo-resins. These curious substances, though fluid

when first obtained, soon harden and solidify (p. 876 );they constitute the basis of the best Burmese and othereastern varnishes and lacquers. Specimens of the Thetsee,Melanorrhcca usitatissima , employed as a lacquer, fromArraean ; of the Thenakthu, also used in Arraean, in themanufacture of papier-mach€ work, and in renderingumbrellas water-proof; and of the Gurjim, or wood-oif,from various Dipterocarpi , from Madura, Tinnevelly ,Chittagong , Pegu, and Mahurmanee, are shown. The“ Theet-see,” or varnish-tree of the Burmese , is spread