PROCEEDINGS OF SOCIETIES. 169 
N. Burgess, Esq., in a microscope giving a field of twenty-four 
inches’ diameter. 
Professor Smith, of Kenyon College, U.S., exhibited Tolle’s 
New Binocular Eye-piece, giving binocular effect with a monocular 
microscope ; also a Mechanical Finger, by which the most minute 
objects may be picked up and deposited upon a slide. 
The Old Change Society exhibited Stephanoceros EHichhornii, 
various Hydras, circulation in the ova of salmon, and polarization 
with high powers. Amongst the makers of microscopes Messrs. 
Powell and Lealand exhibited circulation in Valesneria spiralis, 
Volvox globator, portrait of Princess of Wales in beetle’s eye; 
T. Ross, leaf of cactus, scales of fern, the palate of a limpet, 
with Slack’s new diaphragm eye-piece, by which a beautiful effect 
was obtained; C. Collins, ova of toad, young snails (alive), &c.; 
J. H. Steward, circulation in frog’s foot, selections of diatoms, 
&e.; Murray and Heath, ova of lobster, young prawns, &c. ; 
C. Baker, a variety of objects, and a new field microscope 
designed by Mr. Moginie ; W. Ladd, sulphates of iron, nickel, &e. 
In an adjoining room Mr. How exhibited Dr. Maddox’s series 
of photo-micrographs with the oxyhydrogen light, the induction 
coil, and Giessler’s vacuum tubes; and Dr. Millar, F.L.S., the 
magnesium lamp. 
In another room was shown Wyld’s magneto machine by Mr. 
Ladd; folios of water-colour drawings from the collections of 
W. Leaf, Esq., and the President ; Roman and Medieval antiqui- 
ties from the Library of the Corporation of London; autographs, 
ancient keys, &c., by Deputy Charles Reed, F.S.A.; several rare 
engravings, by D. N. Chambers, Hsgq., F.S.A., &e. 
Frank Buckland, Esq., Inspector of Salmon Fisheries, exhibited 
the process of salmon hatching. 
Mr. King, parasites from the gills of salmon ova from Malham 
Tarn, impregnated on the 7th November and hatched on the 3rd 
January ; the egg with the eyes, fish one day old, double trout, 
trout with fungoid disease, circulation in the salmon, and aquaria. 
During the evening the Old Change Choral Society performed 
a selection of glees, and Mr. Rogers several solos; Mr. Aeschmann 
solos on the violoncello, and Miss Weatherhead and others solos 
on the grand piano. 
Amongst the company present were Dr. Beale, F.R.S. ; Charles 
Brooke, Esq., F.R.S.; Dr. Down; R. Farrants, Esq., F.R.C.S. ; 
Jabez Hogg, Esq., F.L.S., Hon. Sec., Royal Microscopical Society ; 
Dr. Lankester, F.R.S., &c.; Henry Lee, Esq., F.R.M.S.; Professor 
Morriss; Deputy Charles Reed, F.S.A.; Henry J. Slack, Esq., 
Hon. Sec., R.M.S.; F. H. Wenham, Esq., F.R.M.S. ; Tuffen West, 
Esq., F.L.S., &e. 
