262 
trate which he exhibited, under the microscope, two sets of lines, 
ruled on glass, varying distances apart, and demonstrated that 
definition is entirely due to diffraction spectra. 
Mr. Peter Cameron read a paper on a new Species of Strumi- 
genys from Japan. 
Mr. J. Cosmo Melvill exhibited a specimen of the rare Coleo 
Ilypocephalus armatus^ Desm., and read an interesting paper thereon. 
At a special meeting, Mr. Alfred Brothers exhibited a large 
number of microscopic natural objects, by means of the new 
optical lantern. 
At the meeting on December '7th, which was an open one, 
Professor Herdman, D.Sc., of University College, Liverpool, 
delivered an address in the Lecture Hall, at Seven o’clock, on 
g‘The Besults of his Recent Dredging Expeditions.” For the 
first time in the history of the Society, ladies were present. All 
the rooms, by the kind permission of the Society, were thrown 
open, and in them was exhibited a large and very choice collection 
of Natural History objects, a full list of which has been printed 
in the proceedings. So great was the success of this innova- 
tion, that the Council recommends the repetition of the experiment 
at an early date. The Council desires to place on record their 
sense of indebtedness to Dr. Herdman for his kindness in giving 
the address on this occasion. 
The Annual Report and Treasurer’s Accounts were adopted 
on motion of Mr. Bailey, seconded by Mr. R. E. Cunliffe. 
Dr. Alfred Brown, of Higher Broughton, was elected a 
member of the Section. 
The following gentlemen were elected officers of the 
Section, and members of Council for the ensuing session: — 
Prof. WILLIAMSON, LL.D., F.R.S. 
THOS. ALCOCK, M.D. 
R. D. DARBISHIRE, B.A., F.G.S. 
J. COSMO MELVILL, M.A., F.L.S. 
