Geometrical methods, chiefly in the theory of thick lenses
By: by James Loudon.
Contributors: DeLury, Alfred Tennyson, 1864-1951 (autograph)
Publisher: Copp, Clark, printers
Published: 1885
Place of publication: Toronto
Language: eng
Number of pages: 11
Subjects: Lenses; Reflection (Optics); Refraction
Notes: Cover title.

"Read before the Canadian Institute, November 1, 1884."

With the autograph of A.T. DeLury.