CLXXX KOVAL .SOCIETY OF CANADA 



Spring Term. 



Jan. 14.— ''The Minor rianets," by Joseph Pope, C.M.G. 



Jan. 2S. — ''The Occurrente of - and j in Invp.stigation," bv Dr. W» 



F. King, C.M.G. 

 Feb. 11. — "Eecent Progress in Astronomy and Allied Sciences," hf 



Otto Klotz, LL.D. 

 Feb. 25. — " Astronomy as applied to Surveying," by C. C. Smith, B.A. 

 Mar. 11.— "The Electron Theory of Matter," by Prof. H. T. Barnes 



of McGill. 

 Mar. '35. — " Convection as a Factor in Stellar Variation," by R. E, 



De Lnry, Ph.D. 

 Apr. 1.— "Maps and Map-:\Iaking in Canada," by J. White, F.R.G.S. 

 Apr. 15.—" Gravity at Sea," by Otto Klotz, LL.D. 

 Apr. 15. — "The New Siiigle-Prisni Sj)ectr()grapli," by J. S. Plaskett,. 



B.A. 

 Apr. 29.— "The Tides," by W. Bell Dawson, F.R.C.S. 

 May 13.—" Personality in Micrometer AVork," by E. M. Stewart, M.A. 



1. "The Scheme of Things," Pt. I. by Prof. A. T. De Lnry. 

 Profesor De Lnry in an elementary and popular manner outlined 



the apparent motion of the stars, of the moon, of the sun and of the 

 earth. 



2. " Remarks on the Doctrine of Probabilities " b}^ Dr. W. F, 

 King, C.M.G. 



Dr. King began by first clearly defining what is understood by the 

 word " probability," distinguishing it from frequency. Its wide use in 

 science, and in connection with insurance, was fully discussed, and it& 

 great value as applied in the " Method of Least Squares " was pointed 

 out. Illustratixjns were given by numerical examples. 



3. " The Scheme of Things," Pt. TI. by Prof. A. T. De Lury. 

 Professor De Lury continued his popular exposition of the motion 



of the heavenly bodies, particula"rly tluii of ilic plaiiets, sliowing how all 

 were controlled by the " Ijaw of Cravitation," first enunciated by 

 Newton. 



4. " Spectrograpli Camera Objectives," by J. S. Plaskett. 



Mr. Plaskett first gave a sliort historical sketch and then pointed 

 out the defects of the cemented single lens composed of either two or 

 three elements. lie then gave thi-ee results, wliicb were very satisfactory, 

 of two lenses specially made for tlio work in the Dominioii Oliservatory. 

 The tests were illustrated by diagrams thrown on the screen. 

 " Some Electrical Anomalies," by R. IM. Stewart. 



Mr. Stewart described in a graphic way two curious electrical 

 phenomena that occurred in connection with the transmission and dis- 



