170 J. H. MAIDEN, 



Flindersia australis, R.Br., "Cudgerie." 



This tree yields a small quantity of gum similar to that of F, 

 Bennettiana. 



Flindersia Bennettiana, F.v.M., "Teak." 



The exudation is a true gum. The greater portion is soluble 

 in cold water, little more on boiling, but the remainder is directly 

 soluble in a very dilute soda solution. It consists of arabin with 

 metarabin. 



In this connection a note on the gum of Khaya senegalensis, a 

 Meliaceous tree from Tropical Africa (Kew Bulletin, 1890, p. 169) 

 will be found interesting. 



Celastrine^. 

 Elceodendron australe, F.v.M. 



Is a common tree of the Sydney district and eastern New South 

 Wales in general, but I do not remember to have found gum on. 

 it. The genus, in other parts of the world, however, yields useful 

 gums. For example, there is a gum of E. orientale, in the 

 Mauritius, see The Voyage of Francis Leguat, i., 53, (Hakluyt Soc). 



Elceodendron glaucum, Pers., of India and Ceylon, would appear 

 to be a desirable new edible gum. "Clear, brittle, light-coloured 

 and soluble in water, forming a good mucilage. The absence of 

 much ash, and adhesiveness and reactions of the solutions are 

 favourable qualities and place it among the gums of the arabin 

 class." (Report of the Officer-in-Charge, Econ. and Art section 

 of the India Museum for the year 1900-1.) 



Sapindace^e. 

 Atalaya hemiglauca, F.v.M., "White-wood." 



This tree exudes a useful pale-coloured gum. See notes on a 

 gum of this tree collected by the Horn Exploring Expedition (62). 

 Native of the interior of South Australia, New South Wales and 

 Queensland. 



I have seen gum exuded from Nepheliumsp. (Northern Rivers), 

 also from Cupania semiglauca, F.v.M., and Cupania pseudorrhus, 

 A. Rich., the product being a hard, clear yellowish soluble gum in 

 each case. 



