L iv ] 
XVIII. On the Changes which take place in the Deviations of the Standard Compass 
in the Iron Armour-plated, Iron, and Composite-built Ships of the Royal Navy, 
on a considerable change of Magnetic Latitude. By Staff Commander E. W. 
Creak, R.N., of the Admiralty Compass Department. Communicated by Sir 
Frederick J. 0. Evans, K.C.B., Hydrographer of the Admiralty . . 615 
XIX. Pelvic Characters of Thylacoleo carnifex. By Professor Owen, C.B., FR.S., 
Ac ... 639 
XX. The Limiting Thickness of Liquid Films. By A. W. Reinold, M.A., Professor 
of Physics in the Royal Naval College, Greenwich, and A. W. Rucker, M.A., 
Professor of Physics in the Yorkshire College, Leeds. Communicated by R. B. 
Clifton, M.A., F.R.S., Professor of Experimental Philosophy in the University 
of Oxford . 645 
XXI. The Direct Influence of Gradual Variations of Temperature upon the Rate of 
Beat of the Dog's Heart. By H. Newell Martin, M.A., M.D., D.Sc.; Pro¬ 
fessor in the Johns Hopkins University, Baltimore, U.S.A. Communicated by 
Dr. M. Foster, Sec.R.S. .663 
Index to Part II .689 
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