1. Glycerin, f℥ss (15 c.c.); Boric solution, f℥ss (15 c.c.); Alcohol (95 per cent.), f℥ss (15 c.c.); Tannic acid, gr. xx (1.3 gm.). 2. Compound tincture of benzoin, f℥j (30 c.c.). Apply with a cotton swab or camel’s hair brush.