CONTENTS XI
ART. PAGE
414. Propagation, of Sound in Water . ... . . 454
[Not hitherto published.']
415. On Methods for Detecting Small Optical Retardations, and on
' the Theory of Foucault's Test......455
{Philosophical Magazine, Vol. xxxm. pp. 161178, 1917.]
416. Talbot's Observations on Fused Nitre.....471
[Nature, Vol. xcvin. p. 428, 1917.]
417. Cutting and Chipping of Glass......473
[Engineering, Feb. 2, 1917, p. 111.]
418. The Le Chatelier-Braun Principle......475
[Transactions of the Chemical Society, Vol. CXI. pp. 250252, 1917.]
419. On Periodic Irrotational Waves at the Surface of Deep Water . 478
[Philosophical Magazine, Vol. xxxin. pp. 381389, 1917.]
420. On the Suggested Analogy between the Conduction of Heat
and Momentum during the Turbulent Motion of a Fluid . 486 [Advisory Committee for Aeronautics, T. 941, 1917.]
421. The Theory of Anomalous Dispersion . . ... . 488
[Philosophical Magazine, Vol. xxxin. pp. 496499, 191.7.]
422. On the Reflection of Light from a regularly Stratified Medium 492
[Proceedings of the Royal Society, A, Vol. xom. pp. 565577, 1917.]
423. On the Pressure developed in a Liquid during the Collapse of
a Spherical Cavity ........ 504
[Philosophical Magazine, Vol. xxxiv. pp. 9498, 1917.]
424. On the Colours Diffusely Reflected from some Collodion Films
spread on Metal Surfaces.......508
[Philosophical Magazine, Vol. xxxiv. pp. 423428, 1917.]
425. Memorandum on Synchronous Signalling......513
[Report to Trinity House, 1917.]
426. A Simple Problem in Forced Lubrication.....514
[Engineering, Dec. 14, 28, 1917.]
427. On the Scattering of Light by Spherical Shells, and by Complete
Spheres of Periodic Structure, when the Refractivi'ty is Small 518 [Proceedings of the Royal Society, A, Vol. xoiv, pp. 296300, 1918.]
428. Notes on the Theory of Lubrication ...... 523
[Philosophical Magazine, Vol. xxxv. pp. 112, 1918.]
429. On the Lubricating and other Properties of Thin Oily Films . 534
[Philosophical Magazine, Vol. xxxv. pp. 157162, 1918.]
430. On the Scattering of Light by a Cloud of Similar Small Par-
ticles of any Shape and Oriented at Random . . . 540
[Philosophical Magazine, Vol. xxxv. pp. 373381, 1918.]
431. Propagation of Sound and Light in an Irregular Atmosphere . 547
[Nature, Vol. 01. p. 284, 1918.]