The result has been that the farmer has often adopted questionable methods from such sources as are available in the treatment of live stock diseases. Scientific research has contributed as much to veterinary medicine in the last thirty years as any other branch of agriculture. The value of a knowledge of veterinary medicine to the farmer cannot be appreciated by any one more fully than by the author since he has experienced farming with and without such knowledge. The author has been continually approached by farmers seeking knowledge such as is offered in this book of modern veterinary methods. Such methods have not only been appreciated by farmers but in many cases they have been permanently adopted with success in their farm operations. Many farmers may still be skeptical about the value of the informa tion given out by scientific institutions but such men can not get away from good farming practice as advocated by men who have had a life time experience devoted to live stock farming.