example one two weeks prior to the test the horses did not receive any form of medication at five o 39 clock p m the evening before the test each horse was fed a normal meal consisting of 1 gallon of grain with twelve percent protein and ten pounds of alfalfa hay during the test each horse was stabled separately and had access to drinking water at all times on test day each horse was fasted until five hours after administration of the test product and then given a normal meal consisting of one gallon of grain with twelve percent protein and ten pounds of alfalfa hay each horse was again given a normal meal consisting of one gallon of grain with twelve percent protein and ten pounds of alfalfa hay at five hours and at twelve and one half hours after administration the morning of the test 4 96 grams of the product from example one containing a total of four grams of phenylbutazone was dissolved in one quart of water the dissolved mixture of product and water was then tubed directly into the horse 39 s stomach without removing the tube a follow up quart of water was also tubed directly into the horse 39 s stomach to flush out the tube and mixing.