This treatise is a humble attempt to produce highly interesting and instructive works on moral science. The author confines his observations exclusively to man as he exists in the present world, and in perusing these pages, this explanation must be kept in view. Illustrated. Contents: natural law; constitution of man, and its relations to external objects; sources of human happiness and conditions requisite for maintaining it; application of the natural laws to the practical arrangements of life; what extent are the miseries of mankind referable to infringement of the laws of nature; evils that befall mankind from infringement of the organic laws; calamities arising from infringement of the moral law; punishment as inflicted under the natural laws; morals advantages of punishment; on the combined operation of the natural laws; influence of natural laws on the happiness of individuals; relation between science and scripture; conclusion.