Several new glycosides were isolated from digitalis seeds, four substances, B-I", A-III', C-0, and X₂, were obtained as crystals, and five substances, PGA, A-II', B-I', PGB, and A-III, were obtained as a colorless powder. In accordance with their coloration, it was assumed that substances B-0, PGA, B-I', and C-0 belong to the digitoxigenin series, and substances A-II', A-II, PGB, A-III, and A-III'to the gitoxigenin series.