68 Laboratory Arts 



sleeve is then partly filled with the above mixture, and the second 

 end placed in position. In a day or two the joint will be rusted 

 tight, and it will be impossible to move the parts. This method is 

 applicable to a broken iron water pipe, or cast-iron water jacket, 

 indeed to any broken iron article where the mechanical difficulties 

 arising from its use are not insuperable. 



