Natvrall and artificiall conclvsions. Compiled first in Latine, by the worthiest and best authors, both of the famous University of Padua in Italy, and divers other places. Englished since, and set forth by Thomas Hill, Londoner, whose own experiments in this kinde, were held most excellent. And now againe published, with a new addition of rarities, for the practise of sundry artificers; as also to recreate wits withall at vacant times.

XLI. How to write letters on the Egshell, that the same Letters may appeare within on the Egge.

TO doe this, take a little quantitie both of Galles and Allome, which worke together with Vineger, and after write with this liquor what you will on the shell, and that dryed, laye then the Egge in Vrine, else annoint the Egge about with waxe, unto the thicknesse of a Paper or somwhat more, and with a fine bodkin write déep letters, that the holes may be open, and the letters appa∣rant, into the which holes powre of this liquor, and when the same is dryed on the Egge, then séeth the Egge untill it be hard, and after lay the same to soke in sharpe Vineger, through the which soking the letters will so passe through the shell, that the letters may be easily discerned on the Egge after the shell is pulled off from it.