 He spent a winter in Japan during the Russo-Japanese War and returned with his dream clarified, having noticed how healthy infants were due to 12 to 18 months of breastfeeding.On his return he began to use his access as a Justice of the Peace to licensed baby-boarding homes where typical conditions moved him to establish such a boarding facility himself at his Karitane residence at the foot of Huriawa Peninsula.It is the establishment of the Plunket Society on 14 May 1907 for which King is best known.