8 CATALOGUE OF ACHROMATIC MICROSCOPES, 



s. d. 

 Registering Thermometer, mounted in ivory, with japan 



or zinc case ... ... ... .. 16 6 



Ditto ditto, in box, with similar cases, from lls. to 13 6 



Bath thermometers ... ... ... from 026 



Box ditto ... ... ... ... from 012 



OPERA OB RACE GLASSES. 



Tourist's exceedingly portable double achromatic Opera, 

 having additional Lens for increase of power, beauti- 

 fully finished with morocco case complete ... 1 7 6 



Ditto ditto, covered with morocco leather, and 



bronzed ... ... ... ... 1 10 



The best ivory mounted and gilt double achromatic Operas, 



by the finest makers of Vienna and Munich, from ... 110 



Ditto ditto, in buffalo, tortoiseshell, or japan 



mountings ... ... ... ... from 150 



Extra powerful double achromatic Tourist's Race or 

 Reconnoitring Operas, covered with morocco leather, 

 and having sliding sun shade and portable morocco 

 case ; the most powerful made ... ... ... 2 15 



Ditto ditto, having achromatic eye piece, whereby 



great portability is obtained with the same degree 

 of power ... ... ... ... 350 



Ditto ditto, with a jointed frame, to lessen the 



distance between the axis of vision ... ... 3 12 6 



Japanned leather Cases to ditto, with a sling ... 12 



SPECTACLES, EYE GLASSES, &c. 



Plain steel Spectacles, strongly made ... ... 2 6 



Ditto ditto, with double temples ... 030 



Superior ditto, extra quality glasses ... ... ... 039 



Very superior ditto, the best made ... ... 056 



Ditto ditto, with pebbles ... ... 8 6 



Tortoiseshell Eye Glasses, all kinds ... ... 019 



Beautifully finished tortoiseshell Hand Spectacles, with 



double and counter springs ... ... ... 096 



Ditto ditto, with plain spring ... ... 076 



Every variety of Gold and Silver Spectacles at equally low prices. 



