Researches chemical and philosophical: chiefly concerning nitrous oxide or dephlogisticated nitrous air and its respiration / By Humphry Davy.

  • Davy, Humphry, Sir, 1778-1829.
Date:
1800
Catalogue details

Licence: Public Domain Mark

Credit: Researches chemical and philosophical: chiefly concerning nitrous oxide or dephlogisticated nitrous air and its respiration / By Humphry Davy. Source: Wellcome Collection.

    52/614 (page 26)
    { 2(5 ) Airuming the accuracy of this experiment as a foundation for calculation, I endeavoured in the fame manner to afcertain the differences in the compofition of the orange-colored acids, and the acids containing ffill larger proportions of nitrous ffas. o 93 grains of the bright yellow acid of 1,5 became, when 6 cubic inches of gas had been paffed through it, orange colored and fuming, whilff the undiffblvcd gas increafed in quantity fo much as to render it impoffible to confine it ffy the folution of potafh. When 9 cubic inches had paflTed through, it became dark orange. It had gained in weight 2,/5 grains, and was become of fpecific gravity 1,48 nearly. Hence it was evident that much nitrous gas had [)affcd through it undifTolvcd. 25 cubic inches more of nitrous gas were nowflowly fent through it: it firft became of a light olive, then of a dark olive, then of a muddy green, then of a bright green, and laftly of a blue green. After its afflimption of this color, the gas appeared to pafs through it unaltered, and large globules # •