198 J. H. MAIDEN. 



the limb must be kept rigid." (Chemist and Druggist of Australasia 

 p. 754, June 7th, 1890.) 



Agathis robusta, Benth. and Hook. f., yield "Queensland Dammar." 

 See Lauterer (33) for an analysis. 



Araucaria CunningJiamii, Ait., "White-, Hoop-, Richmond River- 

 or Moreton Bay-Pine." 

 In my paper (54), I announced that the exudation of this species 

 was a gum-resin. I also stated, "The only previous instance I 

 can find of arabin being found in a coniferous resin is by Dulk 

 (Morel, [3] ix., 714), who found 01 per cent, in White Dammar 

 (Dammara orienfalis, Lamb.) 



In 1893 I received from a Queensland correspondent an extract 

 from "Proces-Verbaux" of the "Actes de la Societe Scientifique 

 du Chili," Sesion jeneral del 4 de abril de 1892, Tome ii., 1 ere 

 livraison, 1892." The extract was in Spanish, and not under- 

 standing that language I applied to the Consul General for Chili 

 in Sydney (Capt. W. H. Eldred), who through ill health was 

 unable to furnish me with the translation until 2nd June, 1894. 

 I then ascertained that Prof. E. Heckel of Marseilles had 

 announced the discovery of a gum in the exudation of the Aus- 

 tralian Araucaria BidwiUi and in that of the Chilian A. imbricata. 



I then wrote to Prof. Heckel under date 19th June, 1894, 

 asking for further particulars, and he very kindly sent me a copy 

 of his paper (14), published 20th August 1891, on A. Bidwilli, 

 and which paper showed that arabin was present to the extent 

 of nearly 70 per cent, in the exudation of that species, and to a 

 less extent in the exudations of A. Cunninghamii and A. Cookii. 



Further correspondence elicited the fact, that MM. Heckel and 

 Schlagdenhauffen had in August 1887 (16) announced the dis- 

 covery of arabin in the exudation of Araucaria. The matter 

 stands thus, that Dulk, in 1878, made the original discovery, while 

 Heckel and Schlagdenhauffen in 1887, and Maiden in 1889 made 

 similar observations independently. 



