45, CORNHILL, B.C., AND 122, REGENT STREET, \V., LONDON. 475 



FIG. 2t>2. 



FIG. 2858. FIG. 2859. FIG. 2855. 



FIG. 2856. 



2894 Bladder Frame and Lead Weights, for illustrating the 



Each. Each. 



s. d. s. d. 



elasticity of the air 



, 12 to 16 



2895 Lungs Glass, for illustrating elasticity of air (fig. 2895) 



2896 Gun-Lock Experiment, for striking flint and steel 



in vacua ......... 



2897 Breaking Squares, of thin glass, to illustrate the pres- 



sure and also the expansive power of air . 



2898 Wire Cage, for use with above, to protect the Glass 



Receiver 



A 



FIG. 2871. 



FIG. 2846. FIG. 2890. FIG. 2891. 



FIG. 2864. 



086 

 1 10 

 026 

 056 



FIG. 2895. 



2899 Receivers for Air Pumps, well annealed Glass, with 



accurately ground, welted edges 



2900 Bell Shaped Close Receivers, (fig. 2900 and 2900), 



diameter; across the welt: 



4-in. 5-in 6-in. 8-in. 10-in. 12-in. 



5s. 8s. .10s. 6d. 16s. 6d. 25s. 34s. 



2901 Bell Shaped Open Receivers (fig. 2901), including ground 



plate glass cover : 



Diameter 4-in. 5-in. 6-in. 8-in. 10-in. 



6s. 9s. 12s. 18s. 6d. 28s. 



2902 Cylindrical Shaped Receivers, Close : 



Diameter 4-in. 



4s. 6d. 



13-in. 



42s. 



5-in. 6-in. 8-in. 10-in. 12-in. 



7s. 8s. 6d. Us. 6d. 18s. 22s. 



