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January 26th, 1886. — “On the forces concerned in producing 
the solar diurnal inequalities of terrestrial magnetism,” by 
Professor Balfour Stewart, F.R.S. 
“ On the diurnal period of terrestrial magnetism,” by Professor 
Arthur Schuster, F.R.S. 
February 15th, 1886. — “On the development of bone,” by W. 
Blackburn, F.R.M.S. 
February 23rd, 1886. — On the pollution of the river Irwell 
and its tributaries,” by C. A. Burghardt, Ph.D. 
“Preliminary note on a new method for the determination of 
organic carbon in polluted water,” by A. Burghardt, Ph.D. 
“ On some light phenomena observed on the surface of Lake 
Windermere, November 22nd, 1885,” by Thomas Kay, Esq. 
March 9th, 1886. — “Note on an apparatus for photographing 
the Moon,” by A. Brothers, F.R.A.S. 
March 15th, 1886. — “ On the diffraction of microscopic objects 
in relation to the resolving power of objectives,” by Dr. Hodgkinson, 
B.Sc. 
“On a new species of Strumigmys from Japan,” by Peter 
Cameron, Esq. 
“ On Hypocephalus armatus (Desm.),” by J. Cosmo Melvill, M.A. 
March 23rd, 1886. — -“ On the efflux of air as modified by the 
form of the discharging orifice,” by Henry Wilde, Esq. 
“ On the determination of the calorific power of fuel by direct 
combustion in oxygen,” by William Thomson, F.R.S.E. 
April 6th, 1886. — “ On the projectrices of a circle,” by James 
Bottomley, D.Sc. 
“On the structure of a new example of the cone of Abies 
oblonga of Bindley and Hutton,” by Professor W. C. Williamson, 
F.R.S. 
Several of the above papers have been passed by the 
Council to be printed in Yol. X. (third series) of the 
Memoirs. 
