Unpublished letter, regarding trisecting an angle from James Ryan to Davies Gilbert In this covering letter to Gilbert, Ryan explains that he is experiencing financial hardship in his old age, and then discusses the desire of mathematicians to find a way of trisecting an angle. He asks that Gilbert lay his paper before the Royal Society, and requests that if it be returned to him if not approved for reading or publication. Subject: Mathematics Written by Ryan at 16 Rupert Street, Haymarket [London]. 15 June 1830