The progress that has been made in the teaching of agriculture and the emphasis given to the subject through the pressure of the world war have made a re vision of the Introduction to Agriculture desirable. When this book was published eight years ago, few of the states of the Union had published courses of instruction in agriculture. Most of the states have now done so and the authors have compared these courses and selected the salient points as a basis for an elementary book. Any state will find this book a text admirably fitted to its required course of study in agriculture.