PROFESSOR TAKEMATU OKADA

of snow, the evaporation in the Inland Sea districts, the foehn-winds etc. His exhaustive investigations on the origin of the rainy season, "Baiu," is a genuine classic in this field. His work regarding the typhoon of the Far East comprises the fruits of his long practical experience of prediction service. It is interesting to remark that the most important law of motion of cyclones and anticyclones under mutual influences, which he discovered and later was named after him by Prof. Fujiwhara, was described not in any of his papers, but in his elementary