SIR OLIVER JOSEPH LODGE, D.Sc., LL.D., F.R.S. AND WILLIAM FRANCIS, F.L.S. "Nec aranearum sane textus ideo melior quia ex se fila gignunt, nec noster VOL. XXXV.-SIXTH SERIES. LONDON: TAYLOR AND FRANCIS, RED LION COURT, FLEET STREET. SOLD BY SIMPKIN, MARSHALL, HAMILTON, KENT, AND CO., LD. "Meditationis est perscrutari occulta; contemplationis est admirari perspicua.... Admiratio generat quæstionem, quæstio investigationem, investigatio inventionem."-Hugo de S. Victore. CONTENTS OF VOL. XXXV. Lord Rayleigh on the Theory of Lubrication.. Mr. F. Twyman on Interferometers for the Experimental Prof. Barton and Miss Browning on Variably-Coupled Vibra- tions: II. Unequal Masses or Periods. (Plates I. & II.).. 62 |