xvn 



Monday Evening, January 19th, 1880. 



Section I. — Physical and Experimental Science. 

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



Howard Grubb, m.e., f.r.a.s., in the Chair. 



The following Communications were laid before the Section : — 



Gr. F. Fitzgerald, f.t.c.d. — '• Note on the Conductivity of Tourmaline." 



Gr. F. Fitzgerald, f.t.c.d. — " Note on the Construction of absolute 

 Electrometers." 



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



Professor J. Emerson Eeynolds, m.d. — Short Reports from the 

 Chemical Laboratory of Trinity College : 



No. 8. — " On the production of Specular Deposits of Lead 



Sulphide." 

 No. 9. — '' On the Desulphuration of Thiocarbonide." 



Professor W. F. Barrett, f.r.s.e. — " On Edison's Loud-speaking Tele- 

 phone, and the Theory of its Action." 



Section II. — Natural Science. 



(With which the " Royal Geological Society of Ireland " is 

 associated.) 



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



The following Communications were laid before the Section : — 



Rev. Dr. Haughton, f.r.s. — " On an Application of Prof Rossetti's 

 newly-discovered Law of Cooling to the question of Radiation of 

 Heat from the Earth, and to problems of Geological Climate and 

 Time." 



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



Dr. Frazer, f.r. C.S.I. — Exhibited Bopyrus Squillarum, parasitic on 

 Palcemon serratus, and an Antler of Red Deer, obtained from the 

 Dodder Bar in the River LifFey. 



Monday Evening, February 16th, 1880. 



Section I. — Physical and Experimental Science. 



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



Wentworth Erck, ll.d., in the Chair. 



The following Communications were laid before the Section : — 



Charles E. Burton, b.a., f.r.a.s. — " Physical Observations of Mars, 

 1879-80." 



(Transactions, Yol. II. , Part XII.) 



