54 The South Australian Naturalist. 



Box Gum (E. hemiphloia), Blue Gum (E. leucoxylon), and 

 Pink Gum (E. fasciculosa), also growing in the Wirrabara 

 Forest Reserve, were portrayed. The latter tree has very hard 

 and strong timber, but is slow in coming to large dimensions. 

 The Sugar Gum (E. corynocalyx) is a most useful timber, and 

 it grows almost anywhere. It is not so particular as to situa- 

 tion and soils as other gums. The Native Pine (Callitris 

 robusta) was depicted near Quorn; and the White Gum or 

 Candlebark (E. rubida) grew at Balhannah in damp situa- 

 tions. The two Stringybarks (E. obliqua and capitellata) 

 showed the ill effects of fires, and Mr. Gill showed a plan of 

 Mount Burr Forest Reserve with the system of fire-breaks. The 

 Remarkable Pine (Pinus insignis), as grown at Wirrabara, 

 were seen about thirty years old, and Mr. Gill emphasized the 

 high commercial value of this wonderful pine, remarking that 

 nowhere else in the world does it grow so rapidly and so well 

 as in our northern plantations. 



Lectures, July 20. — Mr. J. F. Bailey lectured on ''Aus- 

 tralian Trees," and Mr. W. J. Kimber followed with ''Bivalve 

 Molluscs." Mr. Bailey's lecture was illustrated by a fine set of 

 lantern slides, representing magnificent specimens of trees or 

 tree groups from all parts of Australia. The lecturer dealt 

 Willi his subject from the aesthetical and sentimental side, and 

 also gave valuable information regarding the practical value 

 or market peculiarities of the various timber trees. The 

 lecture was listened to with keen interest. Mr. Kimber in his 

 lecture first dealt with the systematic position and anatomical 

 characteristics of the bivalves, and then showed a number of 

 curious .and beautiful specimens from his collection. Of special 

 interest were the specimens shown of the wood-boring mol- 

 luscans (teredo) and their work, and of the rock-boring 

 pholads. The edible oysters and pearl oysters were dealt with 

 in detail, as were a number of species chiefly interesting for 

 the beauty of form and coloration of their shells. At the close 

 of the lectures several botanical exhibits were placed before 

 the members. 



Forthcoming Lectures. — On August 17 Mr. H. W. Hale 

 will lecture on "Defensive Devices of Fishes." On August 31 

 Dr. R. H. Pulleine will lecture on "Tasmanian Scenes." The 

 annual meeting, with exhibits and review of the year's work, 

 will be held on September 21. The officers for the forthcoming 

 year wdll be elected at this meeting. On October 5 a series of 

 three illustrated lecturettes will be given: "Bees" (Mr. A. E. 

 Ridley), "Brazil" (Mr. W. Champion Hackett), and "Botanical 

 Notes" (Mr. J. M. Black). On November 19 Dr. Angas John- 

 son will lecture on "Microbes — the Smallest of Plants." 



