tfEGRETTI AXU ZAMBEA, HOLBORN VIADUCT, E.G., 



FIG. 3103. 



Eacn. 

 s. d. 



Each. 

 s. d. 



3109 



3110 



3111 



3112 



3113 



3114 

 3115 

 3116 



3117 



3118 



Improved Dropping Bottles, Set of 12 in case 

 (fig. 3109) 150 



Stethometer (Dr. Quain's), for ascertaining the 



expansion of the chest ...... 1 10 



Dentists' Mirrors, with powerful Magnifier, and hinge- 

 joint, to make them portable . . . from 1 10 



Optometer (Smee's), for testing the Vision, and 



arranging lenses to supply any defect ... 550 



Complete Sets of Trial Sights, having 36 pairs of Convex, and 36 pairs of 

 Spherical Lenses, 18 Convex and 18 Concave Cylindrical Lenses, 12 Prisms, 

 2 Black Discs, 4 Discs with small apertures, a series of Tinted Glasses, and 

 a Graduated Adjustable Frame in which the various Trial Sights are held 



1 

 11 



10 10 



2 

 16 



by springs. Complete in Mahogany Box 



Eye Shades, covered with Silk, Black or Green colour . 



Occhiombra or Transparent Eye Shades, with case 



Nitrous Oxide Gas Apparatus, for Dental operations, 

 complete with pure compressed gas, face-piece, two- 

 way stop-cock, &c., &c 



Electrical, Galvanic, and Electro -Magnetic Apparatus, 

 for Medical Use. See pages 455 and 459. 



Sick Room or Invalid's Telegraph and Signal Bell, see ante, page 461. 



10 10 16 16 



