PROCEEDINGS FOR 1917 LI 



The Electrolytic Deposition of Iron from Organic Solutions. 

 By E. H. Archibald, Ph.D. and L. A. Piguet. Presented by Dr. 

 D. Mcintosh, F.R.S.C. 



Further Studies on the Solubility of Aluminium Hydroxide in 

 Ammoniacal Solutions and the Formation of Ammonium Aluminate. 

 By E. H. Archibald, Ph.D., and Y. Habasian. Presented by Dr. 

 D. Mcintosh, F.R.S.C. 



Critical Data for Air. By Dr. C. B. Kuenen and Dr. A. L. Clark, 

 F.R.S.C. Presented by Dr. A. L. Clark, F.R.S.C. 



The Precipitation of Zinc by Electrolysis. By Dr. D. Mcintosh, 

 F.R.S.C. 



Asymptotic Satellites near the Equilateral Triangle Equilibrium 

 Points in the Problem of Three Bodies. By Professor Daniel Buch- 

 anan. Presented by Dr. A. L. Clark, F.R.S.C. 



Asymptotic Satellites near the Straight Line Equilibrium Points 

 in the Problem of Three Bodies. By Professor Daniel Buchanan. 

 Presented by Dr. A. L. Clark, F.R.S.C. 



The Solubilities of the Chloroplatinate, Bromoplatinate and Chlori- 

 ridate of Ammonium and the Separation of Platinium and Iridium. 

 By E. H. Archibald, Ph.D.. and John W. Kern. Presented by Dr. 

 D. Mcintosh, F.R.S.C. 



On the Ultra Violet Spectra of Magnesium and Selenium. By 

 Professor J. C. McLennan, F.R.S.C, and Mr. J. F. T. Young, B.A. 



On the Origin of Spectra. By Professor J. C. McLennan, F.R.S.C, 

 and Mr. H. J. C Ireton, B.A. 



On the Absorption and Series Spectra of Calcium, Strontium and 

 Barium. By Professor J. C McLennan. F.R.S.C. and Mr. J. F. T. 

 Young, B.A. 



On Arcing Potentials with Metallic Vapors. By Professor J. C 

 McLennan, F.R.S.C, and Messrs. Kent and R. Hamer. 



On Some Investigations on Spectra with a Vacuum Grating 

 Spectroscope. By Professor J. C McLennan, F.R.S.C, and Mr. 

 R. J. Lang. 



On some Investigations on Spectra with the Fluorite Spectro- 

 graph. By Professor J. C McLennan, F.R.S.C, and Mr. D. S. 

 Ainslie. 



On the Absorption Spectra of Metallic Vapors. By Mr. R. C 

 Dearie. Presented by Professor J. C McLennan, F.R.S.C. 



' On an Automatic Device for the Make and Break of an Electric 

 Current. By O. Maass. Presented by Dr. R. F. Ruttan, F.R.S.C 



The Development of the Ultramicroscope. By Professor E. F. 

 Burton, F.R.S.C 



Carbonization of Lignite. By Edgar Stansficld, M.Sc, and Ross 



