x 
W. F. Barrett, F.x.s.z.—“‘ Notes from the Physical Laboratory of the 
Royal College of Science.” 
Section IIT —Natural Science. 
(With which the “ Royal Geological Society of Ireland” is 
associated. ) 
Rev. MAXWELL H. CLOSE, M.A., in the Chair. 
The CuarrMaN, as the outgoing President of the Royal Geological Society 
of Ireland, delivered the Annual Address, 
MonpbAay EVENING, MARcH 177TH, 1879. 
Section I—Physical and Experimental Science. 
(With which the ‘‘ Dublin Scientific Club ” is associated.) 
The Right Hon. the Earl of Rosss, F.R.s., v.P., in the Chair. 
The following Communications were laid before the Section:— 
Professor J. E. REyNoLps, M.D.—‘‘ On a Modification of Dr. Andrews’ 
Apparatus for the Liquefaction of Gases.” 
W.S. M‘Cay, m.a., F.T.c.D.—“ On charging Holtz’ Electrical Machine.” 
G. F. FirzGEraLp, M.A., F.T.c.D.—‘“ On the alteration in volume of a 
charged Leyden Jar.” 
C.’R. C. TicHBoRNE, LL.D., F.c.8,—Hxhibited “a New Lecture Experi- 
ment to illustrate the Dissociation of Salts.” 
Section II —Natural Science. 
(With which the “ Royal Geological Society of Ireland” is 
associated.) 
G. H. KINAHAN, M.R.LA., in the Chair. 
The following Communications were laid before the Section :— 
Captain ArGALL, Mining Engineer.—“On the Eastern Ovoca Mines.” 
Professor E. Huu, F.R.s.—“On the Permian Beds of Armagh and 
Benburb.” 
G. H. Kinawan, .R.1.4.—“On the Rocks in the neighbourhood of 
Armagh.” 
