In preparing this little treatise, I have tried to put the truths of Political Economy into a form suitable for elementary instruction. While connected with Owens College, it was my duty, as Cobden Lecturer on Political Economy, to instruct a class of pupil-teachers, in order that they might afterwards introduce the teaching of this important subject into elementary schools. There can be no doubt that it is most desirable to disseminate knowledge of the truths of political economy through all classes of the population by any means which may be available.