XVI 



W. R. M'Nab, m.d. — " Note on the Root Hairs of Azolla pinnata.'''' 



W. R. M'Nab, m.d. — '^ On Branched Hairs from the Stamen of 

 Tradescantia Virginica." 



W. R. M'Nab, m.d. — " On some Abnormal Flowers of Primula." 

 (Proceedings, Vol. II., N.S.) 



Monday Evening, December 15th, 1879. 



Sections I. and III. — Physical and Experimental Science, and 

 Applied Science. 



(With which the " Dublin Scientific Club" is associated.) 



G. Johnstone Stoney, d.sc, f.e.s., in the Chair. 



The following Communications were laid before the Section : — 



Professor W. Noel Hartley, f.r.s.e., f.c.s.^ — "On the Relation of 

 Chemical Structure to certain Optical Properties of Organic Sub- 

 stances." 



Howard Grubb, m.e., f.r.a.s — " On the New Astronomical Observatory, 

 Cork" 



(Proceedings, Vol. II., N.S). 



John R. Wigham — Exhibited the Albo-Carbon method for improving 

 the illuminating power of Gas." 



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: — 



V. Ball, m.a., f.g.s. — "On Spheroidal Jointing in Metamorphic Rocks 

 in India and elsewhere, producing forms resembling roches Moutonnees. 

 (Proceedings, Vol. II., N.S.) 



Rev. Dr. Haughton, f.r.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 

 iafluences both." 



Percy Evans Freke. — " A Comparative Catalogue of the Birds found 

 in Europe and North America." 

 (Proceedings, Vol. II., N.S.) 



