He worked in Mitsui Noen Farm (Togoshi Farm), present Dai-ichi Engei, that Mitsui-zaibatsu built with flowers and plants collected from all over the world during the Meiji, Taisho era and during and after the Worlld War II in the early Showa era.
永島は明治、大正、昭和初期の戦中・戦後の時代に、三井財閥が世界各国から草花を集めて造った三井農園（戸越農園）、現在の第一園芸に務めた。