INDEX TO THE PROCEEDINGS 



with references to the Transactions. 



Acetate, Cellulose (Fenton and Berry), 16. 



Adair, G. S., Elected FeUow 1921, February 21, 488. 



Adam, N. K., Elected FeUow 1920, May 3, 216. 



Adrian, E. D., Elected Fellow 1921, January 24, 487. 



Alcyonaria in the Cambridge Museum (Hickson), 366. 



Algebraic nimibers as a sum of four squares (Mordell), 250. 



Anode Rays, Nature of the carriers of the (Thomson), 210. 



Aphides, Cynipid hyperparasite of (Haviland), 235. 



Aphis {Myzus ribis, Linn.), Antennal variation in an (Haviland), 35. 



Appleton, a. B., Elected Fellow 1920, November 22, 486. 



The gluteal region of Tarsius spectrum, 466. 



The influence of function on the conformation of bones, 374. 



Appleton, E. V., A method of testing Triode Vacuum Tubes, 239. 

 Aston, F. W., The Mass Spectra of the Chemical Elements, 215. 



The atomic nature of matter in the light of modern physics, 217. 



— — The deterioration of fabric under the action of Light and its physical 



explanation, 487. 

 Atkinson, R. H., Elected Fellow 1920, November 22, 486. 

 Axes, Rectangular, Transformations of (Baker), 147. 



Baker, H. F., On the Hart circle of a spherical triangle, 116. 



On a property of focal conies and of bicircular quartics, 122. 



On the construction of the ninth point of intersection of two plane cubic 



curves of which eight points are given, 131. 

 On a proof of the theorem of a double six of lines by projection from four 



dimensions, 133. 



On transformations with an absolute quadric, 145. 



On a set of transformations of rectangular axes, 147. 



On the reduction of homography to movement in three dimensions, 158. 



On the transformation of the equations of electrodynamics in the Maxwell 



and in the Einstein forms, 166. 



On the stabihty of periodic motions in general dynamics, 181. 



On the stability of rotating liquid ellipsoids, 190. 



On the general theory of the stability of rotating masses of hquids, 198. 



Baker, H. F., and Hantjmanta, C. V., On the generation of sets of four tetra- 



hedra of which any two are mutually inscribed, 155. 

 Banerji, a. C, Elected Fellow 1919, October 27, 212. 

 Banerji, B. N., Elected Associate 1921, February 21, 488. 



