v. Brennan (Sup.) 24 N. Y. Supp. 788; Pierce v. Keator, 70 N. Y. 447, 26 Am. Rep. 612. They are also either continuous or diacontinuous. An easement of the former kind is one that is self-perpetuating, independent of human intervention, as, the flow of a stream, or one which may be enjoyed without any act on