Fine Microscopes, Objects and 

 Accessories. 



spectacles, Opera Glasses, Telescopes. 



Fine Stereoscopes and Views. 



Magic Lanterns and V^iews. 



Kaleidoscopes, Zoetropes, etc. 



Medical and Scientific Books. 



Microscopical Books. 



Any English, French or German Scientific Book Imported 

 to Order. 



Specialists desiring books are invited to correspond. 



Teichmann's Piaimin Crystals from dried human blood mount- 

 ed on slides for the microscope, 50c. post-paid. 



One dozen fine selected objects in neat racked box, $4.00 post- 



JAMES H. LOGAN, 



198 PENX. AVE., GPP. LIBRARY HALL, 



PITTSBURGH, PA. 



