Gray's supplement to the pharmacopoeia : being a concise but comprehensive dispensatory and manual of facts and formulae, for the chemist and druggist and medical practitioner / by Theophilus Redwood.

Date:
1848
Catalogue details

Licence: Public Domain Mark

Credit: Gray's supplement to the pharmacopoeia : being a concise but comprehensive dispensatory and manual of facts and formulae, for the chemist and druggist and medical practitioner / by Theophilus Redwood. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

    85/1090 (page 69)
    Degree of Alixtures. Parts. Thermometer siuks cold produced. Snow Cryst. Chloride of Calcium . 2’ “From . 32° to — 50° = 82 Snow Potassa 131 14J From + 32° to — 51° = 83 COMBINATION OF FRIGORIFIC MIXTURES. Phosphate of Soda . . . 5l Nitrate of Ammonia . . . 3 -From * 0° to — 34° zr 34 Diluted Nitric Acid . 4 Phosphate of Soda . 3] Nitrate of Ammonia . 2 ^From — 34° to — 50° zr 16 Diluted mixed Acids. 4j Snow Diluted Sulphuric or Nitric 8' -From 10° to 56° 46 Acid ... . . . 3 Snow 31 •From Diluted Nitric Acid . . . 2J 0° to — 46° = 46 Snow Diluted Sulphuric Acid . 1' •From — 20° to — 60° 40 Snow Chloride of Calcium . 31 ■From + 20° to — 48° 68 Snow . Chloride of Calcium . . . 31 ■Fi-om + 10° to — 54° = 64 Snow Chloride of Calcium . 2 ^From — 15° to — 68° = 33 Snow Cryst. Chloride of Calcium . 1 [•From 0° to — 66° = 66 Snow r ^From 40° to O CO 33 Cryst. Chloride of Calcium. 3. Snow r ^From 68° to 91° _ 23 Diluted Sulphuric Acid . . 10 EFFECTS OF TEMPERATURE. below zero. Greatest artificial cold produced by the evaporation of a mix- ture of solid carbonic acid and ether, in vacuo, by Faraday 160 Ditto in the open air, by Thiloreir 135 Solid compound of alcohol and carbonic acid fuses .... 131 Greatest artificial cold produced by AValker 91