A 
JOURNAL 
t 
OF 
NATURAL PHILOSOPHY, CHEMISTRY, 
AND 
THE ARTS. 
SEPTEMBER, 1813. 
ARTICLE I. 
On common Ink for tvrUing. By Dr. Bancroft, F. R. S. 
iSfc. From his Researches into Permanent Colours. 
(Concluded from p. 237 XXXT.J 
M CHAPTAL would reject the use of sugar in tnak- 
• ing ink, as being completely useless j for lo him itdid 
not seem even to render the ink more glossy or' shining, though 
such an effect has always been manifest to my apprehen- 
sion. He found no benefit by employing either vinegar, w'ine, 
or beer, instead of water, as a vehicle of the colouring matter 
of ink j indeed, he was persuaded that beer did harm, by in- 
creasing the disposition of ink made with it, to become mouldy. 
M. Chaptal concludes, from bis numerous experiments in Best propor- 
regard to writing ink*, that the best ingredients and proportions 
for composing it, are the following, viz. Two parts of galls in ink by Chap* 
t a1« 
sorts, bruised, and one part of logwood chipped; these arc to be 
* See his CUiniie appliquec anx Arts, tom. iv, 
VoL.XXXVT.-No. 165. B 
boiled 
