442 



NEGRETTl AND ZAMBRA, HOLBOKN VIADUCT, E.G., 



H J 



FIG. 2623. 



Each. 

 s. d. 



Each. 

 s. d. 



11 



2641 



Is. 8d. and 2s. 

 



5 

 3 



8d. 



6-in. 



I0d. 



4J-in. 



Is. 4d. 



12-in. 18-iu. 



Is. 6d. 2s. 9d. 



o^-in* /-in. 



ls.~6d. IsV^d. 2s 1 .' 



a o 



2622 Platinized Silver, for Smee's Batteries price variable, about per oz 



This averages about 3-oz. to the square foot, but can be had of various thicknesses. 



2623 Binding Screws, or Terminals, of various forms and descriptions 



(fig. 2623) :- 



FigS. ABODE F G 



9d. 8d. 8d. Is. 8d. and Is. Is. 2d. Is. 6d. 



2624 Gold Wire and Plate, about . . . .per dwt. 



2625 Silver ditto ditto 



2626 Gold or Silver Solution, ready for use in 3-oz. bottles . 



2627 Sulphate of Copper per lb. 



2628 Sulphuric Acid 



2629 Amalgamated Zinc Plates, of all sizes . . per lb. 



2630 Zinc Rods, of various lengths .... ditto 



2631 Copper Wire and Plate, of all thicknesses . ditto 



2632 Glass Cells, various sizes, mounted with Brass sliding 



bars for electro -gilding and plating . . from 



2633 Gutta Percha or Ebonite Precipitating Cells, of various 



forms 



2634 Tin Trays, for impregnating plaster casts with boiling 



water, wax, &c from 



2635 Plumbago, pure, for Electrotype purposes . per oz. 



2636 Brushes for applying Plumbago, &c 



2637 Brushes for Polishing and Bronzing electrotypes . 



2638 Water of Air Stone, for cleaning electrotypes 



2639 Porous Cells, Round, of superior quality : 



2640 



10 6 



Very superior Plaster of Paris Medallions, for reproduction 

 by the Electrotype process 



3d. 4d. 6d. 8d. Is. Is. 6d., and 2s. 6d. each. 



