For the meaning of the phrase “difficult and extraordinary case,” asused in New York statutes and practice, see Standard Trust Co. v. New York, etc., R.Co., 178 N. Y. 407, 70 N. E. 925; Fox v. Gould, 5 How. Prac. (N. Y.) 278; Horgan v.McKenzie (Com. PI.) 17 N. Y. Supp. 174; Dyckman v. McDonald, 5 How. Prac. (N. Y.) 121.