In the fccond E0ay ,of the making of Hinges, Locks and 
Keys : The manner of Riveting, making of Screws and Nuts. 
And particularly,of cutting Wcrmes upon great Screws. 
In the third EiTay, of the making of Jacks, Bullec-molds, 
Twiftingof Iron, Cafe-hardening, Some Tools not before 
defcrib*d* The fever al forts of Steel; the manner of foft# 
.niqg,hardning and tempering the fame. 
Prmted iotJohnM4rtyn^?t\r\itt to theR^i/ Society, 16^%. 
