1^0. 133.] 



95 



leaves can be turned over, ■without the possibility of mistake. 

 The machine reduces at once the difficult labor of paging account 



books to a simple mechanical performance, not requiring on the 

 part of the operator even a knowledge of figures. It received a 



gold medal. 



Messrs. Mc Adams also exhibited an improved method of ruling, 

 by which the process is facilitated, together with specimens of 

 ruling in a great variety of forms, to each of which a silver medal 

 was awarded. 



CAST STEEL GEARED HOLLERS. 



These rollers are mainly used by silversmiths and jewellers for 

 the purpose of rolling silver or gold into plates of various thick- 



