A comprehensive scheme of lubrication now being carried out for the British Ship building Research Association by the Royal Technical College, Glasgow, in their Department of Civil and Mechanical Engineering has included work on journal bearings, and a paper entitled “Some Factors in the Design and Lubrication of Journal Bearings” by Prof. A. S. T. Thomson, D.Sc., Ph.D., Prof. A. W. Scott, B.Sc., Ph.D., W. Ferguson, B.Sc., and H. L. McBroom, B.Sc., Ph.D. was recently read before the Institution of Engineers and Shipbuilders in Scotland, and this gave details of this work. We give here a shortened version of this paper.