222 



L. CASELLA'S CATALOGUE 



FIG. 2674. 



FIG. 2659. 



FIG. 2636. 



FIG. 2656. 



CHEMICAL APPARATUS. 



APPARATUS FOR EXPERIMENTS WITH GASES, 



2630. Gas Jars, cylindrical, with ground ends, so that they may he closed with a plate 

 of glass, for collecting and preserving gases, a set of 7, size from 6 to 50 oz. 

 10s. 6d. ; or separately from 9d. to 2s. 6d. each. 



DEFLAGRATING JAES, hell-shaped, stoppered, with ground hase, for collecting and 

 preserving gases : 



2632. H pint size . . 2 I 2634. 6 pint size . . 040 



2633. 3 . . 3 I 2635. 10 



Gas or Transfer Jars, with brass caps : 



Without Stop-cock. 



056 



With two Stop-cocks. 

 Union Ferule bladder, etc. (Fig. 2636). 



2640. GLASS PLATES, for covering air j ars, funnels, etc., each, 2d. to 9d. 



2642. TEATS FOE AIE JARS, for removing jars filled with gas from the pneumatic trough 



and preventing the access of air, 4 inches diameter, Is. ; 6-inch., Is. 3d. ; 

 8-inch. . v . .....' . , . 016 



2643. Mercurial Pneumatic Trough; porcelain . 2 6 to 3 6 



2644. PNEUMATIC TEOUGH, japanned tin, with movahle shelf and tray, 3s. 6d. ; 22 



inches hy 16 inches . . . '.""'.. . 12 6- 



