CXXVIII ROYAL SOCIETY OF CANADA 



Report of Section III. 



Four meetings of the section were held. The members present 

 were : — 



Mr. Baillairgé, Prof. Cox, Mr. Deville, Dr. Ellis, Sir Sandford 

 Fleming, Mgr. Ilamel, Dr. Hoffmann, Prof. Johnson, Mr. Keefer, Prin- 

 cipal Loudon, Mr. Macfarlane, Prof. McLeod. 



The following papers were read : — 



1. Presidential Address, by C. H. McLeod, M.E. 



2. " The Need for a Hydrographie Survey Department for Canada 

 (Present State of the Question)," by Professor Alexander Johnson, LL.D. 



3. " The Synchronism of Terrestrial Magnetic Disturbances and 

 Unusual Excitation in the Trails of Comets," by Arthur Harvey, 

 F.R.S.C, (Sec. II.) President of the Astronomical and Physical Society 

 of Toronto. 



4. " Illustrations of Eemarkable Tidal Undulations on January 1st, 

 1899," (From Eecording Tide Gauges in the Region of Nova Scotia,) 

 (with 2 plates), by W. Bell Dawson, M.A., Ma.E., A^st. M. Inst. CE. 



5. " On Van't Hoff's Freezing Point Constant for Dilute Solutions 

 of Sodium and Potassium Chlorides and Sulphate's," by Prof. J. G. 

 3IacGregor, M.A., D.Sc, F.E.S.E. 



6. ^Thorium and Uranium Radiation," by Professors E. Ruther- 

 ford, M.A., B.Sc, and R. B. Owens, presented by Prof. Cox. 



7. " Damping of Electrical Oscillations," by Harriet Brooks, pre- 

 sented by Prof. Cox. 



8. " Notes on Frazil and Anchor Ice," by Howard T. Barnes, M.Sc, 

 Joule Student of the Royal Society, London, presented by Prof. Cox. 



Prof. Callendar having ceased to be a resident of Canada, it is 

 recommended that he be placed on the retired list. 



Tho section unanimously recommends that Rule 6 be suspended 

 •as far as this section is concerned and that Prof. Alfred Baker, Dr. 

 W. Lash Miller and Mr. Frank T. Shutt, M.A., be elected members of 

 the society. 



In regard to the increase of membership in each section from 25 to 

 30, suggested by Council, it is the opinion of the section that it should 

 have the power to increase its membership to 30, but that the increase 

 should be gradual, say not exceeding two additional members each year 

 until the whole number of 30 members be reached. 



The section recommends to the society the adoption of the follow- 

 ing resolutions : — 



" That the Royal Society feels it a duty resting on them to continue 

 io point out the importance of taking every possible means to safe- 

 Ijfuard the uavitration of Canadian waters." 



