242 



The President felt sure that all present would join in returning their hearty 

 thanks to Mr. Stewart for his very lucid remarks on the sound-producing 

 and sound-receiving organs of these grasshoppers. It was rather interest- 

 ing to know that the circumstance of a sound-receiving apparatus being 

 situated in the front leg was not confined to insects, but might be traced in 

 the Argasidas. Professor Hullal, of Berne, had found it in the Persian Argas 

 (Argas persicus). 



The thanks of the meeting were unanimously voted to Professor Stewart 

 for his communication. 



Mr. Morland said that, like Mr. Stewart, he had also just returned from 

 his holiday, only he went in an opposite direction — to Jutland. Whilst 

 there he made inquiries about the famous diatomaceous stone which had 

 frequently been described, but which appeared to be very little known in 

 this country. However, he thought this would no longer be the case, as he 

 had brought over such a quantity that he had to pay considerable excess on 

 his luggage. He had some of the material with him for distribution to 

 those interested in it. In preparing it for examination he had cleansed some 

 by dissolving it in hydrochloric acid and then boiling it with soda. He 

 then treated the residue with sulphuric acid, and finally bleached it with 

 chlorate of potash. He thought the material really came from a great depth : 

 that which he had collected had evidently been thrown up by the waves. 



The thanks of the meeting were unanimously returned to Mr. Mor- 

 land for his communication. 



The President called attention to a number of beautifully executed draw- 

 ings of food-stuffs, &c, which Mr. Connor had brought for the inspection of 

 the members. 



Announcements of meetings, &c, for the ensuing month were then made 

 and the proceedings terminated with the usual Conversazione. 



The following objects were exhibited : — 

 Eurycercus lamellatus ... ... ,.. 



Head of Plumed Gnat (Chironomus), show- 

 ing all the parts in natural colour... 

 Parasite of Swan (OmithoMus cygni)... 

 Diatoms from Mors Island, Jutland ... 

 " Cementstein" from Mors Island 



Attendance — Members, 47 ; Visitors, 2. 



I 



Mr. F. W. Andrew. 

 Mr. F. Enock. 



Mr. H. E. Freeman. 

 Mr. H. Morland. 



jj 



>> 



October 9th, 1885. — Conversational Meeting. 



The following objects were exhibited : — 

 Section of Eggshell of Emu ... 

 Actinosphenia splendens 

 Scotch Heather ... 

 Zoothamtiium arhuscnla... 

 Navicula Durrandii, Kitton, n.s. 

 Oakapple fly, Andrecus terminalis 



Mr. F. W. Andrew. 

 Mr. E. Carr. 

 Mr. A. L. Corbett. 

 Mr. C. G. Dunning. 

 Mr. A. Durrand. 

 Mr. F. Enock, 



