«l.93 per cent., while breccia and others form 4.78 per cent, and 

 4.91 per cent, respectively. 



Mr. R. AI. Johnston emphasised the immense amount of 

 trouble that Dr. Noetling must have taken in preparing such 

 voluminous notes. His admirable classification of the Tas- 

 nianian rocks used by' the Aborigines would be most valuable 

 to members of the Society and students generally. The Society 

 was much indebted to Dr. Noetling. 



NOTES AND EXHIBITS. 



Mr. L. Rodwajr exhibited a branch of a black currant tree, 

 which carried the winter spores of a destructive disease to black 

 curr?nt and gooseberry trees, called Nectria cinnibarina. The 

 spores were distinctly visible. The summer spore, he said, is 

 called Tuberculana vulgaris, and appears in ochre-like nodules, 

 whilst the winter spore is in the form of bright red sacs. 



AUGUST 9, 1909. 



A special General Meeting of the Society was held, after due 

 notice, at the Museum on Monday evening, August 9, 1909. 



Mr. Bernard Shaw, I.S.O., in the chair. 



The Chairman stated that the meeting had been convened to 

 consider a recommendation from the Council that the last para- 

 graph of Rule 44 should be repealed, and explained that the 

 object of the proposed alteration of thef rules was that in the 

 interval between the courses of the ordinary Monthly Meetings 

 of the Society an informal meeting or conversazione should be 

 held, attended by the Fellows and their friends, at which His 

 Excellency the President should be invited to address them on 

 any matters connected with the objects of the Society. 



The motion for repeal was carried on the voices. 



The Monthly General Meeting of the Society was then held. 



Mr. Bernard Shaw, I.S.O., in the chair. 



ELECTION OF FELLOWS. 



Messrs. Claud Clerk and E. H. Pearce, and Airs. R. W. 

 Fereday were electee^ Fellows of the Society. 



THE FOLLOWING PAPERS WERE READ : 



(i) On the applications of Multenions to Metagcometry. By 

 Professor Alex. McAulay, M.A. 



In the absence of Professor McAulay, Mr. E. L. Piesse gave 

 a concise explanation of the purport of this paper, and said that 

 the researches in Alultenions were a development of his previous 

 work on Quaternions and Octonions. The properties of AIul- 

 tenions were first described by Professor McAulay in a paper 

 read before the Royal Society of Edinburgh, 1907-8, entitled 

 "Algebra after Hamilton, or Multenions."' The present paper 

 described the application of Alultenions to non-Euclidean 

 Geometry. 



Owing to the difficulty of printing some of the mathematical 

 characters used, it has not been possible to publish the paper 

 in the Proceedings of the Societv. 



