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c) best white plate-glass with ground edges, 

 per 100 



Slides of the English size, 76 mm X 26 mm (3 X 1 in.) : 



a) white crown-glass with unground edges, 

 per 100 . . . . : 



b) white crown-glass with ground edges, 

 per 100 



c) best white plate-glass with ground ed- 

 ges, per 100 



Slides of extra large size, 87 mm X 37 mm 



(3% X I 1 /* in.): 



a) white crown-glass with unground edges, 

 per 100 



b) white crown-glass with ground edges, 

 per 100 



c) best white plate-glass with ground ed- 

 ges, per 100 



Hollow Slides: 



a) small size, 55 mm X 32 mm (27* X 17* ^ n -)> ^ best 

 make and finish, edges bevelled, each . . . 



b) extra large size, 87 mm X 37 mm, (3 3 / 8 X 17s in -)> 

 of best make and finish, edges bevelled and 

 polished, 5 mm thick, each 



Slides with cemented glass rings, for moist cham- 

 bers, 1 or 2 mm deep, each 



Cover-glasses, Squares : 



a) size: 24 mm G, per 100 . 



b) 21 



c) 18 



d) 15 



P \ 10 



^ * > 



4. 



2.50 

 3.50 

 7.50 



3.50 



. 



9.- 



0.50 



0.80 



4.70 

 3.60 

 2.70 

 1.80 

 L 



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