GUMS, RESINS, AND OTHER VEGETABLE EXUDATIONS. 165 



GUTTIFER^E. 



Calophylluminophyllum, Linn., "Ndilo Tree" of India; "Tumana" 

 of the South Sea Islands. 



This tree when wounded, exudes a small quantity of bright 

 green gum, which is not collected, nor does it appear to be made 

 use of in any way. (Dymock, Materia Medica of Western India.) 



For a full account of this oleo-resin see Lauterer (33). Native of 

 Queensland. 



Calophyllum tomentosum, Wight, "Poon" or "Sirpoon"of India. 



The gum of this tree is black and opaque, and much mixed with 

 pieces of corky bark ; it has a feebly astringent taste, and is very 

 soluble in cold water, to which it yields a yellow-brown solution, 

 •exhibiting a strong blue fluorescence. If the gum is steeped in 

 water for some time the solution becomes very dark in colour. . . 

 I do not know whether this gum is applied to any industrial or 

 medicinal use, but as it is collected by the natives of India it is 

 supposed by them to have some medicinal virtue. (Dymock, 

 Materia Medica of Western India.) 



Lauterer (33) gives an account of the astringent gum of this 

 tree collected iu Queensland. 



Malvace^:. 



The three Natural Orders Malvaceae, Sterculiacese, Tiliacese all 

 contain a gummy substance, and the twigs exude a slime when 

 placed in water. The normal gum appears to resemble that of 

 Sterculia gum and is white and horn-like; a red astringent gum 

 is also found in these Orders. 



Adansonia Gregorii, F.v.M., "Sour Gourd," "Cream of Tartar " 

 tree, the "Gouty stem tree" of North-west Australia. 



A dark red gum exudes from the fruit. (Bentham, Flora Aust.) 

 "Upon the bark of these trees being cut, they yielded in small 

 quantities a nutritious, white gum, which both in taste and appear, 

 ance resembles maccaroni, and upon this bark being soaked in hot 

 water, an agreeable mucilaginous drink was produced." (Journ. 

 of two Exped. of Discovery into N. W. and W. Australia, Grey, 

 p. 112.) 



