“…Inflammations of the external ocular coats, con¬ junctivitis, corneal ulcers, episcleritis and possibly some forms of keratitis more often occur in association with mixed infections in which Chilomastix, Trichomonas, Craigia and Giardia predominate. 7. The insidious exudation which accompanies "quiet iritis" of protozoan association has the final form of a dense, tough membrane which is comparable to the jacksonian membrane about the cecum and colon and believed by many to arise from protozoan activity.…”