s distinguished from equity iaw, it ts a body of rules and principles, written or unwritten, which are of fixed and immutable authority, and which must be applied to con-troversles rigorously and in their entirety, and cannot be modified to suit the peculiari-tles of a specific case, or colored by any judi-cial discretion, and which rests confessedly upon custom or statute, as distinguished from any claim to ethical superiority. Kle-ver v. Seawall, 65 Fed. 395, 12 C. C. A. 661