lviil PROCEEDINGS OF THE ROYAL HORTICULTURAL SOCIETY. 



sidered (a) in its meteorological conditions, and (b) as to its 

 chemical and physical components ; 2. The empirical effects of 

 fog (a) as diminishing the amount of light, and (b) in its injurious 

 effects arising from the action of its poisonous and obstructive 

 components ; 3. The microscopical study of lesions to tissues 

 produced by fog ; and 4. Experimental data likely to throw light 

 on the subject. Various experts will be invited to take part in 

 the investigation, and a circular will be issued to cultivators, 

 asking for their experience. Professor Church furnished the 

 remarkable fact that he had noticed how Convolvulus major 

 growing in the Portland Road was bleached by rain-drops. This 

 was due to the presence of sulphurous acid in addition to the 

 usual sulphuric (in the form of sulphates) in London ram. He 

 found also that when London fog was filtered the air was acid, 

 but the soot was alkaline, in consequence of the presence of 

 ammonia. Dr. Russell has even detected arsenious acid in rain- 

 water collected in the City. 



GENERAL MEETING. 

 April 23, 1889. 

 Mr. -Tames Douglas, E.R.H.S., in the Chair. 

 Elections. 



Fellows, G. — Miss E. Bloom, Richard Henry Fremhn, C. S. 

 Gordon, Miss E. Phillipps Russell, George Hyde Wollaston, 

 M.A., F.G.S., Professor Edward Perceval Wright, M.D., F.L.S. 



The following paper was read : " The Auricula," by the Rev. 

 F. D. Horner, M.A., Burton-in-Lonsdale. 



FLORAL COMMITTEE. 



W. Marshall, Esq., in the Chair, and fourteen members. 

 Awards Recommended:— 



Silver- Gilt Banksian Ifeclal. 

 To Mr. J. Walker, Whitton, Middlesex, for a fine group of 

 Daffodils, of good quality, and containing a number of handsome 

 varieties, the most noticeable being Narcissus Dr. Hogg, french- 



