TRANSACTIONS OF THE SECTIONS. X' 



TRANSACTIONS OF THE SECTIONS. 



[ \n asterisk * indicates that the title only is given. The mark f indicates the same, 

 but with a reference to the Journal or Newspaper in which it is published in extenso.J 



Section A.— MATHEMATICAL AND PHYSICAL SCIENCE. 



THURSDAY, SEPTEMBER 1. 



Page 



Address by Professor E. W. Hobson, D.Sc., F.R.S., President of the 



Section 509 



1. Positive Rays. By Professor Sir J. J. Thomson, F.R.S 522 



2. A New Spectrophotometer of the Hiifner Type. By E. A. 



Houstoun, M.A., Ph.D., D.Sc 524 



3. A New and Simple Means of producing Interference Bands. By 



R. A. Houston, M.A., Ph.D., D.Sc 524 



4. *A New Gvroscopic Apparatus. Bv Professor A. E. H. Love, 



F.R.S. : 524 



FRIDAY, SEPTEMBER 2. 

 Joint Meeting with Section B : Discussion on Combustion (p. 501) 524 



1. *The Molecular Weight of Radium Emanation. By Sir William 



Ramsay, K.C.B., F.R.S., and Dr. R. W. Gray 524 



2. On the Number of Electrons in the Atom. By Dr. J. A. CaoWTHEB 524 



3. On the Attraction Constant of a Molecule of a Compound and its 



Chemical Properties. By R. D. Kleeman, D.Sc, B.A , 525 



4. Report on Solubility. By Dr. J. V. Eyre (p. 425) 526 



5. *Tlie Deduction of Hydration Values of Acids from the Rate at 



which they induce Hydrolysis. By F. P. Worley 526 



Mathematical Department. 



1. *On Functions derived from Complete and Incomplete Lattices in 



Two Dimensions and the Derivation therefrom of Functions 

 which enumerate the Two Dimensional Partition of Numbers. 

 By Major P. A. MacMahon, F.R.S 526 



2. On a certain Permutation Croup. By Dr. H. F. Baker, F.R.S.... 526 



3. On the Trist'ction of the Elliptic Functions. By Dr. H. F. Baku:, 



F.R.S. 528 



