vill 
V. Bat, M.A. F.G.S.—“ On Stilbite from the Metamorphic (@xeiss) 
Rocks in Western Bengal.” 
(Proceedings, Vol. IT., Part IT.) 
Captain ArcAaLtt.—Exhibited a Plan and Sections of the Mines Kast of 
the Ovoca River, County of Wicklow. 
MonbDAy EVENING, DECEMBER 16TH, 1878. 
Section I.—Physical and Experimental Science. 
(With which the “ Dublin Scientific Club” is associated.) 
Professor J. EMERSON REYNOLDS, M.D., in the Chair. 
The following Communications were laid before the Section :— 
WENTWORTH ErRcK, LL.D.—‘‘On a new form of Constant Bichromate 
Cell.” 
G. JOHNSTONE STONEY, M.A., F.R.S., Secretary to the Society.‘ On a 
complete Expansion for Polarization Stress in Gases, with its con- 
sequences.” 
R. J. Moss, F.c.s.—“On the Oxidation of Iron in the presence of 
Vartry Water.” 
(Proceedings, Vol. II., Part IT.) 
Professor RrynoLps.—Exhibited a simple form of Mechanical Filter for 
Vartry Water, and a Sample of Milk adulterated in a novel way. 
G. F. FitzGERALD, F.1.0.D.—Exhibited Mr. Kerr’s Experiment on the 
Reflection of Light from the Pole of a Magnet. 
Section II—Natural Science. 
(With which the ‘‘ Royal Geological Society of Ireland” is 
associated. ) 
Rev. MAXWELL H. CLOSE, M.A., in the Chair. 
The following Communications were laid before the Section :— 
E. Hutt, F.z.s.— On the occurrence of Crystals of Sodium Chloride 
in Chert of the Carboniferous Limestone.” 
(Proceedings, Vol. II., Part 11.) 
G. H. Kinawan, ™.R.1.4.—“On the Irish Cambro-Silurians and 
Silurians.” 
(Proceedings, Vol. I1., Part IT.) 
Professor Huu, F.R.s.—Exhibited Fifteen Maps of the Geological 
Survey of Wisconsin, by Professor T. C. Chamberlain. Twenty-one 
Maps and two sheets of Sections of the Geological Exploration of the 
A0th Parallel, U.S.A., and Sixteen Maps, two sheets of Sections, 
and two Panoramic Views of the Geological Survey of Colorado. 
