(1) The develpment of Infusoria found nummerously in the rumen, was rexamined by AKASHI'S method(this journal, 23;9, 1951) using bovine rumen contents. Rumen contents were obtained from an indigenous goat through a permanent rumen fistula adapted to it. The rumen contents were dried up for a different period of time at a different temperature immediately or after centrifuged, and used for culture. No motile organisms could be found in any of the samples. (2) Rumen contents not dried up nor soaked in acid were cultivated with goat's rumen fluid as culture medium. But contrary to the results reported by AKASHI, no motile organisms were found in all the specimens.