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Contents of PROCEEDINGS, No. A 652. July, ipi7. 



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Page 



A GRAPHICAL METHOD OF DRAWING TRAJECTORIES FOR HIGH- 



ANGLE FIRE. By W. E. Dalby 333 



THE DISSIPATION OF ENERGY IN THE TIDES IN CONNECTION WITH 



THE ACCELERATION OF THE MOON'S MEAN MOTION. By R. O. Street, M.A 348 



THE COMPLETE PHOTO-ELECTRIC EMISSION FROM THE ALLOY OF 



SODIUM AND POTASSIUM. By William Wilson, Ph.D 359 



EXPERIMENTS WITH MERCURY JETS. By S W. T- Smith, M.A., D.Sc, 



F.R.S., and H. Moss, M.Sc .. .. .. 373 



OBITUARY NOTICES OF FELLOWS DECEASED :— Sir William Ramsay (with 



portrait) ; William Esson xlii— lvii 



