A Lecture on Some of the Most Characteristic Features of Illuminated Manuscripts, from the VIII. to the XVIII. Century ; By Richard THomson, Librarian of the London Institution. As Delivered in the Theatre of the London Institution, on Wednesday, January 21st, 1857, by William Tite, Esq. M.P., F.R.S., F.S.A. Honorary Secretary. To Which is Added A Second Lecture on The Materials and Practice of Illuminators: with Biographical and Literary Notices Illustrative of the Art of Illumination