As a new culture mediwn for the Ciliate, Balantidium coili, isolated from a plantar ulcer of a leprosy patient, Sabouraud glucose agar medium(SGA) had several advantages: 1. it was easily made, and 2) the culture grew faster and longer than any previriusly discovered media. Of the contents of SGA, dextrose and peptene are essential nutrient, for the growth of Balantidium coli. When we cultivated Balantidiuum coli. we founund that it produced a nuueoid eubstance and a sweet smilling arcma, forming a colony like tacteria The new straining metlnd for Balantiduin coli. were 3% iodine and carbol-fuchsin stain which atained trophazaite, and cysts more sirnply and distinctly, retaining their original form.