January 6th, ipoj.] PROCEEDINGS. xv 



above it. The pillar also supports, above the lens, a metal disc 

 in which is cut a narrow slot parallel to the cross line and 

 vertically over it. By observing the cross line through the 

 slot and lens, parallax is entirely avoided. 



General Meeting, January 6th, 1903. 



Charles Bailev, M.Sc, F.L.S., President, in the Chair. 



Mr. Charles Oldham, Knutsford, and Mr. Alexander L. 

 Mellanby, M.Sc, Manchester, were elected ordinary members 

 of the Society. 



Ordinary Meeting, January 6th, 1903. 

 Charles Bailey, M.Sc, F.L.S., President, in the Chair. 



The thanks of the members were voted to the donors of the 

 books upon the table. The following works were included 

 amongst the recent donations to the Society's library : — " T/ie 

 Hepaticcc of the British Islands" by W. H. Pearson, 2 vols. 

 (4to., London, 1902), presented by Mr. Fred H. Smith; 

 '■'■Midland Churches: a History of the Congregations oti the Roll 

 of the Midland Christian Unio7i" by G. E. Evans (4to., Dudley, 

 [899), presented by the author; " Un seul Chafnpig7ion stir le 

 Globe!'''' by L. Hugues (8vo., Port Louis, Mauritius, 1902), pre- 

 sented by the author ; " Histoire de la Societe Diaikerquoise, 

 i8y6-igoo" by M. E. Debacker (8vo., Dunkerque, 1901), 

 presented by the Society. 



Mr. Alfred Brothers sent the following *' Note on 

 Japanese ' Magic ' Mirrors," which was read by the Hon. 

 Secretary. 



In the report of the discussion on Japanese " magic " 

 mirrors it is stated that the probable cause of the pictures 



