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.

    40/614 (page 14)
    enter at the fame time, as the increafe of weight was 4]j5 grains. The dark orange of the globe diminitlied rapidly ; it became warm at the bottom, and moifl on the fides. After a few minutes the color had almoft wholly difap- , peared. To afeertain the quantity of aeriform fluid abforbed, the globe was again attached to the mercurial air apparatus, containing 140 cubic inches of common air. When the communi- cation was made, 51 cubic inches rufhed in, and it gained in weight l6,5 grains. A quantity of fluid equal to 54 grains was now taken out of the globe. On examination it proved to be flightly tinged with green, and occupied a fpace equal to that filled by .41,5 grains of water. Its fpecific gravity was con- fequently 1,301. To afeertain if any unabforbed aeriform ni- trous acid remained in the globe, 13 grains of folution of ammonia were introduced in the fame manner as the water, and after fome mi- nutes, when the white vapor had condenfed,