No. 55061. 



Tension of Vapour. 



605 





55055. 1:11. 



55 054. 1 : 20. 



55 060. 1 : 6. 



55057. 1:12. 



55.057. Apparatus for Shewing the Equilibrium of Vapour Tensions in unequally heated com- 

 municating Spaces, Fignte (M. P. Ill, Fig. 216 [II, 2, Fig. 133]), on stand . . . 



55.058. Boiling Vessel for Shewing Ebullition at higher or lower Pressure than the atmospheric, 

 with tall cylinder and angle tube (W. D., Fig. 354 [334]) 



55.059. Apparatus for Delaying Ebullition by a Soap Solution, Figure (W. D., Fig. 359 [339]) 



55.060. Apparatus for Retarding Ebullition with pure Water, Figure (W. D., Fig. 360 

 [340]), so-called Water-Hammer, for shewing the force with which the water is impelled 

 when the "retardation of ebullition" disappears; with sheet iron tube for heating by 

 steam 



55,061. - - idem, without sheet iron tube 



s. d. 

 0.18.0 



0. 6.0 

 0. 3.0 



0. 4.0 



0. 3. 



Cl. 1794, 6200, 



3418, 

 4810.3866. 



