A well-known English authority said in recommending the volume: “Incomparably the best book there is on this tremendously important subject. In fact, I am assured that nothing exists which gives anything like so full a study of microbiology.” In the volume are considered the general functions of microbes, the microbes of the human system, the form and structure of microbes, the physiology of microbes, the pathogenic protozoa, toxins, tuberculin and mallein, immunity, applications of bacteriology, vaccines and serums, chemical remedies, etc. #/ =29.=--=Problems of Life and Reproduction.= By MARCUS HARTOG, D. Sc., Professor of Zoology in University College, Cork. 8vo. The author uses all the legitimate arms of scientific controversy in assailing certain views that have been widely pressed on the general public with an assurance that must have given many the impression that they were protected by the universal consensus of biologists. Among the subjects considered are: “The Cellular Pedigree and the Problem of Heredity”; “The Relation of Brood-Formation to Ordinary Cell-Division”; “The New Force, Mitokinetism”; “Nuclear Reduction and the Function of Chroism”; “Fertilization”; “The Transmission of Acquired Characters”; “Mechanism and Life”; “The Biological Writings of Samuel Butler”; “Interpolation in Memory”; “The Teaching of Nature Study.” =30.=--=Problems of the Sexes.= By JEAN FINOT, Author of “The Science of Happiness,” etc. Translated under authority by Mary J. Safford. 8vo. A masterly presentation of the attitude of the ages toward women and an eloquent plea for her further enfranchisement from imposed and unnatural limitations. The range of scholarship that has been enlisted in the writing may well excite one’s wonder, but the tone of the book is popular and its appeal is not to any small section of the reading public but to all the classes and degrees of an age that, from present indications, will go down in history as the century of Woman. =31.=--=The Positive Evolution of Religion.= Its Moral and Social Reaction. By FREDERIC HARRISON. 8vo. The author has undertaken to estimate the moral and social reaction of various forms of Religion--beginning with Nature Worship, Polytheism, Catholicism, Protestantism, and Deism. The volume may be looked upon as the final word, the summary of the celebrated author’s philosophy--a systematic study of the entire religious problem. =32.=--=The Science of Happiness.= By JEAN FINOT, Author of “Problems of the Sexes,” etc. Translated from the French by Mary J. Safford. 8^o.