54 
Selected Articles, 
that water should first be employed and afterwards the resi- 
due left on the cloth subjected to the action of alcohol at 22°. 
By this method results are obtained quite as satisfactory as if 
vinegar or alcohol be used, and it has the advantage of being 
more economical. 
But I repeat, no purification should be practised if it can 
be avoided, as this process is also prejudicial to the gum re- 
sin, however carefully it may be conducted. 
Jour, de Chim. Med. 
ART. XVI — NEW METHOD OF LABELLING GLASS BOTTLES, &c. 
By F. Boudet. 
This method of labelling bottles which was at first only 
used for those containing corrosive liquids, has been so much 
improved, and is so readily executed at a trifling expense, 
that many apothecaries have adopted it in their shops. 
Convinced that our readers would be desirous of knowing 
the mode in which it is done, I requested M. Golfier Besseyre, 
who is perfectly acquainted with all the details, to communi- 
cate them to me, which he has done as follows: 
White enamel is to be pulverized, carefully triturated and 
the finest portions separated by means of water, the residue 
again triturated, till the whole is reduced into an impalpable 
powder, which is to be dried. This powder is to be ground 
with a small quantity of essence of lavender, and may be 
then used to paint on such glass as will not change its form, 
when exposed to the degree of heat required to melt the ena- 
mel ; but for labelling bottles, it is necessary that the ena- 
mel should be mixed with one-fifth, one-quarter, or even one- 
third of the following flux : 
Powdered rock crystal, 1 part, 
Red lead, 3 parts, 
Calcined borax, ^ part. 
