NOTE ON SOME PORTABLE MICROSCOPES. 



69 



The well-known American optical firm, Messrs. Baiisch & 

 Lomb, of Rochester, JST.Y., represented here by A. E. Staley <fe Co., 



Fig. 2. 



35, Aldermanbury, E.G., make a small portable microscope (Fig. 2 

 — one- third actual size), which recalls the instruments of a bygone 



