the best general wear. Cotton as underwear. The peculiarities of silken underwear. Color in its relation to clothing. Some thickness of underclothing should be worn at all seasons of the year. The addiction of the world to going by the almanac as to the change of VENTILATION WITH RELATION TO HEALTH,. The value of fresh air. Neglect to have proper supply of it in dwellings. 'A popular notion confounds cool air with pure air. The two kinds of ventilation-natural and mechanical. The proper amount of air in cubic feet demanded for the well and the sick. How to ventilate by the natural method. How to air the bedrooms. Prejudice against night air. Camps as enjoyable and unenjoyable. for the cellar-furnace. The necessity of keeping the air of the cellar pure, as well as that of the rest of the house. Suggestion as to places on house-tops, built for the benefit of the population that is never able THE CIRCULATION AND DIGESTION, What constitutes respiration. The skin, as well as the lungs, respires. How the food is converted into matter fit for the renovation of the blood. The circulation of the blood, by which the products of diges- tion are conveyed throughout the body. The circulation of man as compared with that of some of the lower animals. The physiological A brief list of what are deemed some of the most elegant preparations for the toilet, with mention of the names of their manufacturers. Recipe for Farina cologne. Recipe for bandoline. Prize recipe for cologne, Jelly of roses. Japanese pot-pourri. Recipes for the removal of dandruff. Hair-dyes. Recipe for preparation for the nails. Face- powders. Tea hair-tonic. Toilet-vinegar. Strawberry pomade. Three recipes for almond-meal. Five recipes for Florida water. Four recipes for brilliantine. Protest against the practice of "a Baldness. Bites of insects and eruptions. Blackheads of the skin. Boils. Bunions. Burns. Burns and scalds. Carbuncle. Chapped and cracked lips. Chapping of the skin. Chaps and rough skin of the hands. Chaps or cracks at the corners of the mouth. Cracks and Heredity, Health, and Personal Beauty. WHEN INTRODUCTION. HEN we began to write this work we thought, as the text clearly indicates, to impart some information strictly limited to the non-scientific world. We aimed no higher than to correct some popular errors regarding the theory of evolution, and, in addition, to call attention to certain heretofore unnoticed results of the law, the existence of which the theory affirms. Little did we dream that, before we had long entered upon our task, we should happen upon a recent essay of a member of a learned society, in which it is implied that Darwin, in his particular theory of the causes of organic evolution, does not accord full recognition to the inheritable effects of the use and disuse of vital parts by an organism, and that, when scarcely recovered from this surprise, it would be renewed by the statement of a member of another learned society, who contended that only congenital characters are inherited, because acquired characters are not inheritable. The second dictum, that only congenital characters are inherited because acquired characters are not inheritable, begs the question in dispute, for the other side contend that characters, perforce of their being acquired, become congenital. The first dictum, in which it was implied that Darwin did not recognize fully the effects of the use and disuse of vital parts by organisms as among the agencies of change in them and their descendants, shows that he who holds that opinion has not read Darwin with sufficient attention to know that not only are those effects of use and disuse explicitly and often recognized by Darwin, and more and more as he advanced in life, but that their affirmation pervades his whole theory of evolution by natural selection as a minor but great and indispensable cause of the change observable in organisms. We must here preliminarily clear the ground of obstacles to a correct understanding of the particular point which we have in view for discussion,-the heritability of acquired characters,— by describing the distinction made between the effects in the transmission of life in organisms, due to the pressure of external circumstances under purely natural conditions, as compared with similar effects taking place in them through the agency of man, or exceptionally arising we know not whence. The first conception is derived from that view of life which regards it as tending to perpetuate, while modifying, the characters of or ganisms through countless ages, presenting itself to our minds as indissolubly linked heredity. The second conception is derived (according to its advocates) from that view of life which ascribes to characters, derived from changed habits and the use and disuse of vital parts, through artificial selection (man's agency mingling with nature's), obedience to the same law of heredity. It is the second class of these conditions, assumed as inducing change, which some persons deny as having the slightest influence toward hereditary transmission. These latter conditions are, nevertheless, those which are denominated by all persons "acquired characters," although, as will appear later, that is only for convenience of distinction, characters representing the change produced by purely natural selection having been acquired, and universally admitted in various degrees to have been acquired, by all who believe in any form of organic evolution, that is, of course, congenitally acquired. This objection is made in the face of many contradictory facts, contained in the inclusive contradictory fact of all, that every organism must be, at any given instant of time, the |