XX] 
MonpAy EVENING, JUNE 21sT, 1880. 
Section I.— Physical and Experimental Science. 
(With which the “ Dublin Scientific Club” is associated. ) 
R. C. R. TICHBORNE, PH.D., F.C.S., in the Chair. 
The following Communications were laid before the Section :— 
Howarp Gruss, M.E., F.R.A.S.—“ On a new Simple Form of Equatorial 
Telescope for Students’ Use.” 
@. A. Cameron, M.D.—‘“ On the action of Water on Mercuric Sulphate.” 
(Proceedings, Vol. II., N.S.) 
H. N. Draper, F.c.s.—‘ On the influence of Albumen on the Crystal- 
lization of Nitrate of Urea.” 
J. Emerson REYNOLDS, M.D., F.R.S.—Exhibited Meyer’s Vapour Density 
Apparatus, and Dr. Dupré’s Mode of Testing Wine for foreign 
colouring matter. 
Section I1— Natural Science. 
(With which the “ Royal Geological Society of Ireland” is 
associated). 
EDWARD HULL, LL.D., F.R.S., in the Chair, 
The following Communications were laid before the Section :— 
V. BALL, M.A., F.G.8.—“‘ On the mode of Occurrence and Distribution of 
Diamonds in India.” 
(Proceedings, Vol. II., N.S.) 
THomAs PLUNKETT, M.R.1.A.—“ On Chert in the Limestone of Knockbeg, 
Co. Fermanagh. 
(Proceedings, Vol. II., N.S.) 
