230 



NEGBETTI AND ZAMERA, HOLBORN VIADUCT, E.G., 



Each. Each. 



s. d. s. d. 



773 Stereoscope, with extra Lenses for Short Sight, in 



Mahogany or Walnut wood (fig. 773) ... 220 



774 Ditto ditto in Papier Mache, divided form, covered 



with leather and ornamental mounts of various forms 2 10 330 



NEGRETTI AND ZAMBRA'S PATENT MAGIC STEREOSCOPES. 



The great advantage offered by the 

 " Magic Stereoscope " over all other descrip- 

 tions of the instrument is its power of en- 

 larging the slides seen through it to such 

 an extent as to render them perfectly real 

 in appearance, as though the scenes 

 themselves were actually presented to view. 



Speaking of the Magic Stereoscope, the 

 writer in the Art Journal says : " This 

 instrument possesses advantages over every 

 modification which we have yet examined. 

 After a careful examination of all the 

 conditions of the Magic Stereoscope, we are 

 bound to state that it is by far the greatest 

 improvement which has been made in this 

 most interesting instrument." 



The prominent position the Magic 

 Stereoscope has now for more than twenty- 

 five years held, the favourable opinion ex- 

 pressed of its merits by its numerous pur- 

 chasers, and the steady and increasing de- 

 mand, not only in Great Britain, but in all our 

 Colonies, in America, and on the Continent, 

 and, moreover, the entire absence to the 

 present time of any competing instrument 

 of higher pretensions, all combine to estab- 

 lish its great superiority, and to confirm the 

 opinion concerning it expressed in the 

 critique in the Art Journal quoted above, 



Messrs. NEGRETTI AND ZAMBEA are 



the Sole Manufacturers of Mr. COOK'S 



Patent Magic Stereoscope. 



FIG. 775. 



774 Patent Magic Stereoscope, in Walnut, with Achromatic 

 Lenses, on sliding telescopic stand (fig. 774*), with 

 rackwork adjustment for focussing . . . . 



10 10 



