INDEX to VOL. XXXVIII 



ADENEY (Prof. W. E.) on the 

 rate of solution of nitrogen and 

 oxygen in water, 317. 



Aerial, on the form of the trailing, 

 452, 661, 73-2, 744. 



Algebra, on a non-metrical vector, 

 115. 



Allen (Prof. F.) on the discovery of 

 four transition points in the spec- 

 trum and the primary colour sensa- 

 tions, 55 ; on the persistence of 

 vision of colours, 81. 



Alpha particles, on the recoil of, from 

 light atoms, 533. 



Amsler planimeter, on the slip-curves 

 of an, 489. 



Anderson (C. B. ~W.) on the coral- 

 limestones of Barbados, 747. 



Antonoff (Prof. G. N.) on surface- 

 tension and chemical interaction, 

 417. 



Aston (Dr. F. W.) on a positive ray 

 spectrograph, 707. 



Atomic orientation, on, 463. 



Atoms, on the structure of, 256 ; on 

 the recoil of alpha particles from 

 light, 533. 



Audition, on the resonance theory of, 

 164. m . 



Barrow (G.) on high-level sands and 

 gravels at Little Heath, 662. 



Barton (Prof. E. H.) on the resonance 

 theory of audition, 164 ; on a syn- 

 tonic hvpothesis of colour vision, 

 338. 



Becker (H. G.) on the rate of solution 

 of nitrogen and oxygen in water, 

 317. 



Bedson (H.) on a new magnet -testing 

 instrument. 542. 



Bessel-ClifTbrd function, on the, 501. 



Books, new : — Lewis's System of 

 Physical Chemistry, 197 : Eindlay's 

 Osmotic Pressure, 198 ; Livens's 

 The Theory of Electricity, 199 ; 

 Annuaire du Bureau des Longi- 

 tudes, 200 ; Shaw's Lectures en 

 the Philosophy of Mathematics, 

 495 : French's Applied Optics 

 (Steinheil & Voit), 661. 



Bradford (S. C.) on the molecular 

 theory of solution, 696. 



Brock (Major 11. W.) on the geology 

 of Palestine, 741. 



Phil. Mag. S. 6. Vol. 38. No. 22 



Bromwich (Dr. T. J. I'a.) on electro- 

 magnetic waves, 143 ; on approxi- 

 mations in the theorv of proba- 

 bilities, 231. 



Browning (Miss E. M.) on the reso- 

 nance theory of audition, 164 ; on 

 a syntonic hvpothesis of colour 

 vision, 338. 



Bursill (A.) on a new magnet-testing 

 instrument, 542. 



Campbell (Dr.N.) on time-lag in the 

 spark discharge, 214; on the meas- 

 urement of time, 652. 



Carslaw (Prof. H. S.J on problems 

 in conduction of heat, 200. 



Catenary, on a new form of, 452, 661, 

 732. 748. 



Chapman (Dr. S.) on the possibility 

 of separating isotopes, 182. 



Chemical interaction, on surface ten- 

 sion and, 417. 



Clifford function, on the, 501. 



Colour sensations, on four transition 

 points in the spectrum and the 

 primary, 55. 



vision, on a syntonic hypothesis 



of, 338 ; on a theory of, 402. 



Colours, on the persistence of vision 

 of, 81. 



Conductivity of solid insulators, on 

 the thermal, 705. 



Contrast, on the fundamental law 

 for the true photographic rendering 

 of, 187, 633, 637. 



Critical speeds of machinery, on, 395. 



Cyclone, on the travelling, 420. 



Cylinders, on the potentials of ellip- 

 tic, 465. 



David (Major W, T.) on the origin 

 of radiation in explosions. 492. 



Debenham (F.) on the raised marine 

 muds of South Victoria Land, 746. 



Diffraction, on, by apertures with 

 curvilinear boundaries, 289 ; on 

 the use of the Clifford function in 

 problems of, 520. 



Du Toit (Dr. A. L.) on the geology 

 of the marble delta of Natal. 665. 



Earth, on the use of the Clifford 

 function in the theory of the figure 

 of the, 513. 



Eason (A. B.) on critical speeds of 

 machinery as related to vibrations 

 395. 



8. Dec. 1919. 3 F 



