These are reprints of articles chiefly on visual fields, luminosity and adaptation of the eye to light that have appeared in the Archives of Ophthalmology, American Journal of Ophthalmology, Bulletin of the Johns Hopkins Hospital, Journal of Experimental Psychology, Journal of General Psychology, the Personnel Journal, American Journal of Psychology, Transactions of the Illuminating Engineers Society, the Modern Hospital, the Nations Schools, and the Physical and Optical Societies Report of Cambridge. The articles are by Ferree and his associates and are assembled in the order of their appearance in the various journals without any comments. The pages of the volumes are not numbered and there is no index. The volumes should more properly be called collected reprints of Ferree and his associates. They serve as a compact reprint file for one especially interested in visual field studies and lighting.