In the context of linearization, we recall the reflective property of inverse functions; the ƒ curve contains the point (a,b) if and only if the ƒ⁻¹ curve contains the point (b,a).

I told Mr. Perkins I wasn't a-going to, an' he— I think he is a flubdub anyway."

He accepted the Plectronoceratidae as primitive, and the Ellesmeroceratidae as the derived next step, one characterized by holochoanitic structure and diaphragms, and leading to a group of endoceroids;

It was a weary time. A carriage clock had been placed on the discoloured wooden mantelpiece, and slowly its hands crept on from one to two and from two to three.