Xvl 
W. R. M‘Nas, u.p.—“ Note on the Root Hairs of Azolla pinnata.” 
W. R. M‘Nas, m.p.—“On Branched Hairs from the Stamen of 
Tradescantia Virginica.” 
W. R. M‘Nas, m.p.—“ On some Abnormal Flowers of Primula.” 
(Proceedings, Vol. IT., N.S.) 
MoNDAY EVENING, DECEMBER 15TH, 1879. 
Sections I. and III.—Physical and Eaperimental Science, and 
Applied Scrence. 
(With which the “ Dublin Scientific Club” is associated.) 
G. JOHNSTONE STONEY, D.SC., F.B.S., in the Chair. 
The following Communications were laid before the Section :— 
Professor W. Nort HARTLEY, F.RB.8.E., F.c.s.—“On the Relation of 
Chemical Structure to certain Optical Properties of Organic Sub- 
stances.” 
Howarb GRUBB, M.E., F.R.A.S-—“ On the New unions Observatory, 
Cork.” 
(Proceedings, Vol. II., N.S). 
Joun R. WigHam—Exhibited the Albo-Carbon method for improving 
the illuminating power of Gas.” 
Section I1.—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 :— 
V. Batt, M.A., F.G.8.—“ On Spheroidal Jointing in Metamorphic Rocks 
in India and elsewh ere, producing forms resembling roches Moutonneés. 
(Proceedings, Vol. II., N.S.) 
Rev. Dr. Haveurton, F.z.s.—“ A comparison of the July and January 
Temperatures of Grinnell Land and Spitzbergen at present and in 
Miocene times, with an attempt to show that the Gulf Stream 
influences both.” 
Percy Evans Frexe.— A Comparative Catalogue of the Birds found 
in Europe and North America.” 
(Proceedings, Vol. IT., N.S.) 
