Xlll. ABSTRACT OF PROCEEDINGS. 



Mr. C. T. White, F.L.8., exhi1)ited (1) pieces of the stem 

 of Vitis acris F.v.M. When collecting in the Rosedale 

 district recent!}^ ]\Ir. Schmieden had told him that when 

 the stem of this vine was chewed, the tongue and lips 

 became inflamed, the secretion of saliva was increased 

 and intense pain ensued. (2) Seeds of Macrozanomia 

 macrocarpa Cogn. , collected in the Aru Islands by Mr. 

 Snowden, who had forwarded them to Mr. M. J. Colclough, 

 of the Queensland Museum. Mr. Snowden stated that 

 these beautifully Avinged seeds were sometimes found 

 floating about in the air 10 miles out to sea and not uncom- 

 monly fell on schooners' decks. The exhibitor stated 

 that he had observed specimens on the road between Bioto 

 and Mafulu, in Papua, while collecting in that region. The 

 seeds had previously been described by the late F. M. 

 Bailey in the Society's Proceedings (xviii, 3), as those of 

 an unknown Bignoniaceous plant. For the correct 

 identification Mr. White was indebted to the Director of 

 the Roj-al Botanic Gardens, Kew (Lieut.- Colonel Sir D. 

 Prain), Avho, in forwarding the determination, stated that 

 an article on this interesting plant had been prepared for 

 an early number of the Kew Bulletin. 



The President and Mr. H. Tryon took part in the 

 discussion on the exhibits. 



Mr. W. D. Francis read a paper entitled : " The Origin 

 of Black Coatings of Iron and Manganese Oxides on Rocks," 

 which was discussed by Dr. Shirley, Messrs. Tryon, White, 

 and Longman. 



Abstract of Proceedings, July 26th, 1920. 



The Ordinary Monthly Meeting of the Royal Society, 

 was held in the Geology Lecture Theatre of the University, 

 on the 26th July, 1920, at 8 p.m. 



The Pre.sident, Mr. F. B. Smith, B.Sc, F.I.C., in the 

 Chair. 



An apology was tendered by the President on behalf 

 of Professor H. C. Richards, D.Sc, who was absent from 

 Brisbane and proceeding to the Pan-Pacific Science Con- 

 gress at Honolulu. 



