from indigenous Plants. 4*3 



/. Experiments ruith Carrots, (Daiicus carotta Lin). 



Carrots when cut fmall and boiled with water, produce a fweet liquor, by the cva- 

 poration ot which the country-people ufually prepare a fweetifh juice under the name 

 ot carrot-juice. They either eat it Cpread upon bread, or ufe it to fweeten their food. 

 It is alfo fold by them to grocers, who mix it with the common fugar-fyrup. But as 

 the common juice from carrots is too much contaminated with mucilaginous parts to 

 admit of being ufed as fyrup, and has befides a difagreeable talle, I treated it in the 

 fallowing method. 



OntJ'chfffel full of carots was cleared of their external thin rinds, then rubbed fmall 

 on a grater, and the juice expreiTed. This liquor was clarified by boiling with fome 

 whites of eggs, and reduced to the confiflence of a fyrup. In this manner I procured 

 6-^lb. of fyrup, not unpleafantly tafled, but much inferior in quality to the fyrups 

 obtained from the mangold and runkelriibe. Nor did 1 find any means of obtaining a 

 trti€ fugar from it. Alkohol extrafts from it a fubftance, very much fimilar to 

 manna. 



m. Experiments injiituted with Turneps (BralTica xA'^a), for the pur p of e. qfmaUng Sugar. 



I caufed twelve turneps to be peeled and feparated from their crowns, and then to 

 be reduced to a pulp by means of a grater. The pulpy mafs exhibited a fweet, agree- 

 able, yet ilightly Iharp tafte, and yielded after proper expreflion a colourlefs, fw^fct 

 juice. When clarified with a little white of eggs, the clear juice was drained through 

 a woollen cloth, and thickened to a fyrup. It was then of an agreeable tafte, 

 which, though inferior to the fyrups produced from the mangold and runkelriibe, 

 deferves to be ranked with the common fyrup of fugar. By another experiment I found 

 that one fcheffd holds 125 of thefe rapes, and weighs ii6 pounds; and that eight 

 pounds of fyrup may be obtained from it. Twelve weeks were elapfed when I found 

 fugar cryftals had {hooted ; which, however, were very brown, and could not be fepa» 

 rated but with difficulty from the other remaining fluid. 



n. Experiments with the Rape, or 'Cole-wort, (BrafTica napobrafllca). 



The quantity of juice contained in this rape, as well as the agreeable tafte of its 

 juice, induced me to examine it for fugar and fyrup. Sixty of them weighing together. 

 123 pounds, and were freed from their external coat, and then finely grated and prelTed. 

 They yielded 22 quarts of colourlefs juice, which was agreeably fweet, but had an 

 additional fomewhat fliarp tafte like radilhes. 1 fuffered it to boil up twice, during 

 which operation a great quantity of flocculent matter feparated, and the liquor became 

 as clear as water. After cooling it was filtered, diluted with 20 quarts of freflily pre- 

 VoL. III.— DiiCEMBER 1799. ^ ^ pared 



