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absorbed acid action albumin alcohol ammonia animal bacteria baking bleaching bluing body boiling water borax bread calories carbolic acid carbon dioxide cause cent chemical change chemistry chloride chloroform clean clear water cloth cold water combustion compounds contain cooking copper cream of tartar deposits diet digestion disease disinfectant dissolved dough dust effective elements evaporation fatty fermentation fibres flavor flour germs gluten grams grease heat hot water household housewife hydrogen insoluble iron juice kerosene laundry lime liquid materials matter metals milk milk of lime moisture naphtha neutral nitrogenous oxidation oxygen plants poisonous polish potash pound powder present pure quantity readily removed rinsing rubbed sal-soda salt shellac silver soap soda-ash sodium sodium carbonate soft soluble solution solvent spores spot stains starch strong alkalies substances sugar sulphur surface Tartaric Acid temperature tion turpentine vegetable washing soda weight wood yeast
Page 121 - The quantity of soap consumed by a nation would be no inaccurate measure whereby to estimate its wealth and civilization.
Page 68 - ... combinations, in the hope that some one favorably situated and philosophically inclined may carry on the investigation. From the experiments made by the best investigators, it seems probable that only about one-third of the daily ration is available for kinetic force ; that is, that only about one-third of the total energy contained in the daily food can be utilized in digging trenches, carrying bricks, climbing mountains, designing bridges, or writing poems and essays. The other two-thirds is...
Page 121 - ... consumption does not subserve sensual gratification, nor depend upon fashion, but upon the feeling of the beauty, comfort, and welfare attendant upon cleanliness< ; and a regard to this feeling is consistent with wealth and civilization.
Page 132 - Remov chloride of iron is soluble and so hydrochloric acid is used to remove the rust. The best method of applying the acid is as follows : Fill an earthen dish twothirds full of hot water and stretch the stained cloth over this. Have near two other dishes with clear water in one and ammonia water in the other. The steam from the hot water will furnish the heat and moisture favorable for chemical action. Drop a little hydrochloric (muriatic) acid on the stain with a mediFIG.
Page 21 - ... of biological chemistry and physics. Among these are the metabolism of energy and the production of heat by the body in the performance of its ordinary functions, as circulation, respiration and digestion; the relations of muscular and mental work to the metabolism of matter and energy; the demands of the body for nutriment under different conditions of work and rest; the duties performed by the different nutrients...
Page 132 - Let it act a moment, then lower the cloth into the hot water. Repeat till the stain disappears. Rinse carefully in the clear water and, finally, immerse in the ammonia water, that any excess of acid may be neutralized and the fabric protected. Salt and lemon juice are often sufficient for a slight stain, probably because "A little hydrochloric acid is Lemon jui<
Page 47 - ... foot-ton. The power to do mechanical work comes from the consumption of fuel, — the burning of wood, coal or gas ; and this potential energy of fuel is often expressed in units of heat or calories, a calorie being nearly the amount of heat required to raise two quarts of water one degree Fahrenheit. The animal body also requires its fuel, namely food, in order to do other work — its thinking, its talking or even its worrying.
Page 20 - ... and water in the respiratory products. The food, drink, feces, and urine are weighed and analyzed, and their potential energy is determined, as is the kinetic energy given off from the body in the forms of heat and external muscular work. The devices for measuring the...
Page 20 - The most important feature of the respiration calorimeter is a metalwalled chamber in which a man lives, eats, drinks, works, and sleeps. Provision is made for ventilating the chamber and for regulating the temperature and moisture of the air within it. The volume of the ventilating air current is measured and samples for analysis are taken before and after it passes through the chamber, thus obtaining the amounts of carbon dioxid and water in the respiratory products.