February 25, 1958 This court has heretofore held that an examination for use on a hearing before a referee in connection with an issue as to service is permissible ( Oresk v. Feldman, 259 App. Div. 703; Foreign Supply Co. v. Keystone Equip. Co., 278 App. Div. 816). In the circumstances, such examination should have been allowed here.