510 



PROCEEDINGS OF THE AMERICAN ACADEMY. 



ice VI below, until the pressure has been reduced by an amount cor- 

 responding to the strength of the ice V. An exactly similar effect was 



TABLE XXIV. 

 Data for the Equilibrium Curve, Ice V-Ice VI. 



found once on the III-V curve at —25°. That the ice in passing from 

 one solid to another is capable of exerting considerable stress is shown 

 by the occasional rupture of the steel shells containing the water. 



