The term "hybrid " has been carefully reserved for mixtures between what botanists would regard as species - and the mixtures between garden varieties are regarded as "crosses." Though botanists have themselves come to look on species as not different from varieties except in degree - a species being but a vari-tion more widely separated from an original parent form - the difference is worth retaining as of much value in practical discussions. We note however that the Gardeners Chronicle is beginning to abandon this distinction. It calls a cross between the ash-leaf and the white elephant, as a case of a " Hybrid Potato." It may possibly be an inadvertence.