Licence: Public Domain Mark
Credit: Notes of a diabetic case. Source: Wellcome Collection.
Provider: This material has been provided by Royal College of Physicians, London. The original may be consulted at Royal College of Physicians, London.
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![[ ;3 ] When a folution of fugar was mixed with the fulphuret of potafn, and introduced into a veffel excluded from the air, after fome time it was de- prived of its fweetnefs, and converted into a fub- ftance infoluble in alcohol, and having the appear- ance of gum—a foniewhat fimilar effect was pro- duced by the hepatifed ammonia and pure potafh. 4. Sugar in folution introduced into a bottle filled with nitrous gas, after remaining for fome days and being frequently agitated, was found to have an acid tafte, and the acid being fa- turated with an alkali no fenfible tafte of fugar could be perceived. 5. A quantity of the red oxyd of mercury was boiled for fome time in a thick folution of fugar, the oxyd gradually loll its colour, became grey, and at laft globules of mercury could be per- ceived. The liquor being filtered had a rough * » * • <■ * * tafte, and fhewed acid properties on the addi- tion of tindure of litmus, a little potafh being - added, a precipitate of mercury in the form of c a dark coloured powder took place. From thofe experiments it would appear that fugar contains a larger proportion of oxygene than V » * * * ♦](https://iiif.wellcomecollection.org/image/b28407581_0058.jp2/full/800%2C/0/default.jpg)
