(1) Catarrhal, (a) acute, (b) chronic, (c) follicular; (2) gonorrhoeal; (3) ophthalmia neonatorum; (4) trachoma; (5) diphtheritic; (6) eczematosa (phlyctenulosa); (7) vernalis; (8) tubercular; (9) traumatic. This is the clinical classification after Fuch. Treatment of Conjunctivitis In order to give the best care in these cases it is quite essential that both the primary and secondary causes be given attention. Some good =germicide= or =antiseptic= is to be used with intelligence. This is in harmony with the great principles of antisepsis and cleanliness taught by osteopathy from its inception. The use of the microscope in the =bacteriology= of conjunctivitis aids in more definite diagnosis and the selection of a proper germicide. For the Koch-Weeks bacillus, the pneumococcus and the influenza bacillus silver nitrate 1% or a 25% solution of argyrol is used; for the diplo bacillus (Morax-Axenfeld) zinc sulphate 1 gr. to the ounce is almost a specific. A good way to prepare the zinc prescription would be: Boracic acid and water oz. 1. Zinc sulphate gr. 1. The boric acid and water of course being a saturated solution. Apply one drop to each eye about four times a day. If one can not have the use of the microscope to make specific the diagnosis, the zinc solution may be alternated with the argyrol as the germicide. Ice cold applications are good in many of these cases. Catarrhal Conjunctivitis =Acute=.—mostly affects the conjunctiva of the lids in the light form. If severe it invades the bulbar conjunctiva. There is redness and swelling and increased secretion which dries at night upon the edges of the lids and glues them together. The eyes are better in the morning and worse toward evening. =Corneal ulcers= and =iritis= may arise as complications. Chronic inflammation may result. =Etiology.=—Textbooks on the eye give =bacteria= as the chief cause; some scarcely mention anything else. After discussing how the bacteria get there and multiply, they usually bring in some statement to indicate that in many cases no bacteria can be found in the secretions from the conjunctiva. These latter are unaccounted for in the etiology. =Catarrhal conjunctivitis= is non-specific in its origin. The great science of osteopathy will fill in the missing links to works otherwise very exhaustive on the eye. If the cause is due only to a passing irritant as dust, smoke, pollen or wind the disturbance may vary from hyperemia only, to a severe attack of conjunctivitis. Fuch says the majority of cases are produced by bacteria, but THAT IN NOT A FEW CASES OF CONJUNCTIVAL CATARRH THE EXAMINATION OF THE SECRETIONS FOR BACTERIA PROVES NEGATIVE. He also says that the usual course of the disease is from eight to fourteen days, but NOT INFREQUENTLY THERE REMAINS A CONDITION OF CHRONIC CATARRH PROTRACTED OVER A LONG TIME; THAT NOT INFREQUENTLY THE NORMAL CONJUNCTIVAL SAC CONTAINS PATHOGENIC GERMS.