The South Australian Naturalist. 



showing examples of the best known families found in Aus- 

 tralian seas, including Phasianella autralis, mitras, wHeiks, 

 cowries, tritons, and many others. 



THE WILD FLOWER SHOW, 1921. 



Certilicates have been forwarded to all the schools and 

 to the various friends who supplied the flowers for the show. 



The tinancial results of the 8how cannot yet be accurately 

 set out, owing to the fact that some members have not yet 

 forwarded money for tickets sold, but the credit balance will 

 probably be about £70. 



The dates of this year's Show have been fixed for Friday 

 and Saturday, October 13 and 1-1. Will members kindly keep 

 these dates in mind? 



THE CRATERS AND LAKES OF MOUNT GAMBIER, 



SOUTH AUSTRALIA. 



By Charles Fenner, D.Sc. 



This reprint of the paper read before the parent Society 

 by our former Chairman contains a full description of the 

 Mount, with many plans, views, and graphs. Dr. Fenner has 

 carefully reviewed the existing literature on the subject of 

 Mount Gambler, has accurately mapped the region, and after 

 detailed examination has set forth his conclusions in a most 

 interesting way. The origin of the lakes is discussed, and their 

 variations in surface levels are shown to depend on the rainfall 

 of the south-east of South Australia and the neighboring parts 

 of Victoria. The geological period of the outburst is indicated, 

 and the economic effect of the volcanic action in covering a 

 space of 25 s.piare miles with ash deposits is fully dealt with. 

 The paper is bound u\) with the Proceedings of the lioyal 

 Society, the volumes oi which form part of the Library of the 

 Section. Perusal of this paper will render a visit to the Mount 

 much more informative and inicresling. It is to be regretted 

 that dist<ince renders it impossible to have an excursion to tJio 

 Mount under the masterly guidance of our talented Past 

 Chairman. 



