I. MICROSCOPES. 769 



3567. Microscope, with nine objectives -and four eye-pieces 

 and other apparatus. E. Leitz, Wetzlar. 



3568. Microscope, with three eye-pieces and four objectives. 



E. Leitz, Wetzlar. 



3569. Microscope, with two eye-pieces and four objectives. 



E. Leitz, Wetzlar. 



3570. Microscope, with two eye-pieces and three objectives. 



E. Leitz, Wetzlar. 



3571. Microscope, with two eye-pieces and three objectives. 



E. Leitz, Wetzlar. 



3572. Microscope, with one eye-piece and two objectives. 



E. Leitz, Wetzlar. 



These instruments are exhibited as specimens of accurate and elegant work, 

 combining solidity and cheapness. 



3572a. Microscope, large model, with arrangement for the 

 study of rocks. A. Nachet, Paris. 



3572b. Microscope, with camera obscura, for photographing 

 microscopic objects, arrangement of M. Aime Girard. 



A. Nachet, Paris. 



3572c. Microscope for demonstration, which can be passed 

 from hand to hand in histological lectures. A. Nachet, Paris. 



3572d. Portable Microscope. A. Nachet, Paris. 



3572e. Binocular Microscope, producing at will the 

 effects of the stereoscope and the pseudoscope. A. Nachet, Paris. 



3572f. Microscope for the study of the cornea and of the 

 pupil. A. Nachet, Paris. 



3572ff. Natchet's first form of Binocular Microscope. 



F. Crisp, Netting Hill. 



3572g. Natchet's latest form of Binocular Microscope 



(both stereoscopic and pseudoscopic). F. Crisp, Netting Hill. 



3572h. Stevenson's Binocular Microscope, by Eoss, for 

 high powers. F. Crisp, Netting Hill. 



35721. Ahrens' Binocular Microscope, with double 

 similar prisms. F. Crisp, Netting Hill. 



3572j. Ahren's Binocular Microscope, with prism of 

 Iceland Spar (using the ordinary and extraordinary images). 



F. Crisp, Netting Hill. 

 39508. 3 C 



