88 Professor J. W. Judd on Krdkatoa. [May 2, 



show of probability been thought to have resulted from it, it is the 

 province of the physicist and meteorologist, rather than of the 

 geologist, to speak. Without attempting to discuss any of the diffe- 

 rent explanations that have been offered to account for these strikingly 

 beautiful phenomena, it is only just to remark that the basis of all 

 such explanations will probably be found in the experiments carried 

 on by Faraday at the Eoyal Institution, which demonstrated the 

 excessive divisibility of matter and the effect of finely divided 

 particles on light, with others, subsequently made by Professor 

 Tyndall, which suggested the application of these principles to the 

 explanation of the colours of the atmosphere. 



[J. W. J.] 



GENERAL MONTHLY MEETING, 



Monday, May 5, 1884, 



Warren De La Eue, Esq. M.A. D.C.L. F.R.S. Manager, 

 in the Chair. 



Rookes Evelyn Crompton, Esq. 

 Ernest George Mocatta, Esq. 

 Ernest Robert Moon, Esq. 

 John Lawrence Tatham, Esq. 



were elected Members of the Royal Institution. 



John Tyndall, Esq. D.C.L. LL.D. F.R.S. was re-elected Professor 

 of Natural Philosophy. 



The Presents received since the last Meeting were laid on the 

 table, and the thanks of the Members returned for the same, viz. : — 



FROM 



The Governor- General of India — Memoirs, Vol. XX. Parts 1 and 2. 8vo. 1883. 

 T//e Secretary of State for India — Report on Public Instruction in Bengal, 1882-3. 



fol. 1883. 

 The Trustees of the British Museum — Catalogue of Birds, Vol. IX. 8vo. 1884. 

 Academy of Natural Sciences, Philadelphia — Proceedings, 1883, Part 3. 8vo. 



1883. 

 Accademia dei Lincei^ Beale, Roma — Atti, Serie Terza; Transunti. Vol. VIII. 



Fuse. 7-10. 4to. 1884. 

 Agricultural Society of England, Royal — Journal, Second Series, Vol. XX. Part 1. 



8vo. 1884. 

 Asiatic Society, Royal— Journal, Vol. XVI. Part 2. 8vo. 1884. 

 Banlters, Institute o/— Journal, Vol. V. Part 4. 8vo. 1884. 



