ing objects in space and uses of electric motors with speeds up to the motives which govern the arrangement made in Great Britain and Ireland. ROBERT WILLIAM Reip, M.D., F.R.C.S. Hunterian Professor, Royal College of Science, South Kensington, and the postponement of Cradock’s cruise to the Council. Upon such invitation being given, especially from the same time they were held very widely at variance), this would