OPTICAL INSTRUMENTS. 



153 



Spectacles. Octagon-eye Sliding Bows. 

 (Fig. 630.) 



Octagon-eye Turnpin Bows. (Fig. 631.) 



Octagon-eye Single Bows, for Ladies. 

 (Fig. 632.) 



Price, silver, $2.00 and $2.25. 

 " gold, $8.00, $10.00, 



and $14.00. 



