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6
Of the Art of Diſtillation.
Book.1.
Alſo, you may make ſtoples of Glaſſes ground ſo ſmooth that no vapour can get forth by them, aſ you may ſee by this pattern.
![15em](http://upload.wikimedia.org/wikipedia/commons/thumb/0/09/Page_030_%28The_Art_of_Distillation%2C_1651%29.jpg/200px-Page_030_%28The_Art_of_Distillation%2C_1651%29.jpg)
A, Signifies the ſtopple of Glaſs ground very ſmooth and fit to the mouth of the Veſſell.
B, The Glaſs-Body.
But the beſt way is to have a Crooked Pipe, which may have Quick-ſilver in it, and be well luted to the body that no Spirit can get forth: and by this means the Glaſs will never break, for the Quick-ſilver will firſt yeeld.
A,