Reports and Awards ..., Volumes 1-3

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Page 126 - ... carbides, the same as those which constitute American petroleum. An almost unlimited diversity in the reaction is here possible, according to the temperature and the bodies present.
Page 139 - That the custom of taking boiling-points with the bulb of the thermometer in the vapor is more liable to lead to an erroneous determination, at least in certain cases, than if the bulb be placed in the liquid.
Page 128 - ... animals ; the latter is not surprising when we consider that a considerable portion of the tissues of the lower marine animals is destitute of nitrogen, and very similar in chemical composition to the woody fibre of plants.
Page 57 - ... may be easily apprehended. Such a summary may be framed for the present case by assuming that the normal maximum power of the locomotive tested is that which involves a rate of evaporation of 12 pounds of water per square foot of heating surface per hour, and by averaging from the diagrams (figs.
Page 161 - Fah. it is not necessary to try whether it will burn, but merely to collect it in a proper vessel, by which we gain the additional advantage that we may measure the quantity of the vapor, while none of it can be lost by air-currents incidentally passing over the surface of the liquid. He takes, therefore, a glass tube, closed at one end and open at the other, and fills it with the petroleum to be tested ; then closing the open end with the finger, inverts it in a vessel with water warmed to I IO°...
Page 160 - ... hot water, constantly stirring the liquid with the thermometer, frequently noting the temperature, and introducing the test-flame every minute or so. The temperature at which the thin blue flame appears will be the igniting-point of the petroleum, — the point at which it gives off inflammable vapor. To correct this result let the tube gradually cool, introducing the test-flame as before. The lowest temperature at which the vapor takes fire is the true ignitingpoint.

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