Progress report on experimental skipjack fishing near Yap / by Kenzō Ikebe and Takeshi Matsumoto -- Report of the progress of experimental tuna fishing near Woleai / by Kiichi Hasegawa -- An investigation of the waters adjacent to Ponape -- An investigation of the skipjack fishery in the waters of Woleai, with notes on the bait situation at Lamotrek and Puluwat Is. / by Matsumoto