130 The South Australian Naturalist. 



The Moloch Lizard. — Our members will be interested in 

 the short paper contributed by Mr. J. W. Hosking, appearing 

 on another pa'j:e of this number. Such accounts by members 

 of their observations in any branch of natural history would 

 be welcomed by the Editor, and besides being of extreme 

 iuterest to members. M'ould also represent a contribution, how- 

 ever slight, to the annals of science. 



LECTURES AND EXCURSIONS. 



Lecture, "A Chat on Native Stone Implements." Dr. A. 

 M. Morgan, May 15, 1923. — The lecturer illustrated his remarks 

 by a fine collection of specimens from many parts of the Com- 

 monwealth. These clearly showed the remarkable resemblance 

 in workmanship and material all over the continent. Stone 

 axes from Beachport, from Derby, and from Cooper's Creek 

 are all fashioned in the same way and from the same variety 

 of stone. Usually there is a double handle of acacia, fastened 

 with porcupine gum or bound with kangaroo tendons. These 

 axes were not used in cutting down trees, but in cutting 

 notched steps to ascend trees in search of oppossums, native 

 cats, etc. Very early the tribes of aborigines found a way to 

 secure suitable stone by barter of other materials, clays, pig- 

 ments, etc. Some weapons were products of tribes a thousand 

 miles from the place where they were used. Flint was used to 

 a great extent, and chipped to form boring tools, and in 

 skinning or shaping wooden weapons. Hammer stones were 

 held in the hand and were used to break the bones of animals 

 captured. Modern spear-heads, chipped from bottle glass, 

 showed the ingenuity and patience of the native. Nardoo 

 stones, used for grinding the nardoo, were shown. The lec- 

 turer also exhibited a fine collection of the pigments which 

 served the purposes of rouge and cosmetics. Exhibits were 

 shown as follows: — By Mr. Hogan : (1) A well-filled boll of 

 cotton grown at Morialto, of the variety ''Cocos Lightning 

 Express." (2) Stalactites formed by water dripping from a 

 tank. By Mr. Edgar R. Waite : A green globular body taken 

 on the beach, and since identified as an Alga of the C odium 

 family. By Mr. E. H. Ising: Botanical specimens mounted on 

 sheets to show method of drying, mounting, and labelling. 



Lecture, "Univalve Molluscs." Mr. W. J. Kimber. — Mr. 

 Kimber spoke on the univalve molluscs, and exhibited a fine 

 collection, which served to illustrate his remarks. 



Lecture, "The Life Histories of Some Common Parasites." 

 Prof. T. Harvey Johnstone, M.A., D.Sc, July 17, 1923.— The 

 lecturer dealt with the life histories of some species of Tape- 



