Linnaan Society. Royal Institution of Great Britain. 461 



the markings of the disk of the face. They were from Australia ; 

 and not having appeared to have been noticed by any ornithological 

 writer were characterized as follows. ^ 



STRIX PERSONATA. Strix pallide badia; capite supra, dorso, 

 alisque Jusco brunneo variegatis, albisque guttulis parce spar sis ; 

 corpore infrh pallidiori t brunneo parce maculato ; caudd badio 

 brunneoque undulatim jasciata ; disco purpurascenti-badio, cir- 

 culo marginali intense brunneo notato ; digitis unguibusquefor- 

 tissimis. 



Longitudo corporis, 13^ ; alee a carpo ad apicem remigis 2dae, 9; 

 tarsi, 2 ; caudte, 1\. 



A series of birds, belonging to several Families, which were ap- 

 parently undescribed species, was exhibited by Mr. Leadbeater 

 who mentioned his intention of continuing a similar exhibition du- 

 ring some future meetings of the Committee, and then giving a ge- 

 neral description of the whole. 



L1NNJEAN SOCIETY. 



May 24. -A. B. Lambert, Esq., V.P., in the Chair. This day 

 being the Anniversary, the following Officers and Council were elect- 

 ed for the ensuing year. 



President: Edward Lord Stanley, M.P. Treasurer: Edward 

 Forster, Esq. F.R.S. Secretary : J.E. Bicheno, Esq. F.R.S. Under 

 Secretary: Richard Taylor, Esq. F.S.A. Also to fill the five vacancies 

 in the Council : George Henry Lord Bishop of Bath and Wells ; Wil- 

 liam John Burchell, Esq. ; Captain Phillip Parker King, R.N. ; John 

 Morgan, Esq. ; Whitlock Nicholl, M.D. Many of the Members af- 

 terwards dined together at the Freemasons Tavern. 



FRIDAY-EVENING PROCEEDINGS AT THE ROYAL INSTITUTION 

 OF GREAT BRITAIN. 



April 15. Mr. John F. Daniell on the forms and attractions of 

 the particles of Crystals. Mr. Daniell gave a comprehensive and 

 illustrated view of the theories of polyhedral and spherical or 

 spheroidal particles, showed their consistency with each other, and 

 drew some new arguments in support of the latter from the recent 

 experiments of Mitscherlich and himself. 



April 22. Mr. Marshall on the origin and utility of Cow-pox, 

 with the causes of failure in the practice of vaccination. 



April 29. Mr. Faraday on Mr. Trevelyan's recent experiments 

 on the production of Sound during the conduction of Heat. Mr. 

 Faraday gave his view of the minute action of the parts producing 

 this curious effect j he referred the effect to the expansion and con- 

 traction of the colder metal as others had done ; but he pointed out 

 minutely the direction and disposition of the forces, by which such 

 changes in bulk were enabled to produce the phenomenon in ques- 

 tion. 



May 6. Mr. Lindley on the Pitcher Plant. Mr. Lindley de- 

 scribed 



