Some knowledge of the principles of quantum mechanics and how they are applied to theoretical chemistry, it is generally agreed, should be part of the education of all chemists. This instruction in quantum chemistry is either added to the more traditional topics of physical chemistry or given separately; at Syracuse University it forms the third semester of the physical chemistry sequence. While a wide variety of textbooks and monographs on the subject of quantum chemistry exists, the author of the present text found that none of them was satisfactory for his purposes, i. e., none fit his...