The Royal Society of Canada. 17 



Dr. G. M. Dawson then read a paper entitled "Notes on Trias- 

 sic Rocks of the West," after which Prof. Bailey gave an interest- 

 in": address on the occurrence of Indian relics in New Brunswick. 



Dr. T. Sterry Hunt read a paper entitled " Studies on Serpen- 

 tine Rocks," and by title one on the Taconic Question in Geology, 

 and Prof. Macoun one entitled " Notes on Canadian Polypetalae." 



LIST OF PAPERS PRESENTED IN SECTIONS III. AND IV. AT THE 

 MEETING OF THE ROYAL SOCIETY OF CANADA, MAY, 1883. 



Section III. Mathematical, Physical and Chemical Sciences. 



1. Prof. McGregor: — On the independence of the Electro- 

 motive Force of Polarization of the difference of Potential of the 

 Electrodes. 



2. Prof. Harrington : — On some Minerals new to Canada. 



3. Mr. Baillarge: — (I.) Hints to Geometers for a New Edition 

 of Euclid ; 



4. (II.) Simplified Solution of two of the more difficult cases in 

 the parting off or dividing up of land ; also a case in Hydrogra- 

 phical Surveying; 



5. (III.) Le toise des surfaces des triangles et polygones sphe- 

 riques sous un rayon ou diametre quelconque. 



6. Prof. Haanel : — On the Application of Hydriodic Acid as a 

 Blow-pipe Reagent. 



7. Prof. Dupuis : — A Mechanical Arrangement for making a 

 Sidereal Clock show also mean time. 



8. Capt. Deville : — The Measurement of Terrestrial Distances 

 by Astronomical Observations. 



9. Mr. T. Macfarlane :— (I.) On the Reduction of Sulphate of 

 Soda by Carbon ; 



10. (II.) On the Decomposition of Zinc-Sulphate by Common 

 Salt. 



11. Prof. Johnson : — An Account of the Preparations at McGill 

 College for Observing the late Transit of Venus. 



12. Mr. Gisborne : — Recent Improvements in Practical Tele- 

 graphy. 



2 



