( 546 ) 



When Ramsay and Young's observations and ours are represented 

 graphically, a slight difference appears to occur between the two 

 series; the deviation, however, is in our opinion too small for any 

 importance to be attached to it. The line found dynamically (R. and Y.) 

 mostly lies at somewhat higher temperature resp. lower pressure than 

 our statical line ; the deviations may perhaps be explained by the excess 

 of pressure already mentioned in § 1 in the dynamical determinations. 



So we conclude from the above that the setting in of the homo- 

 geneous equilibrium takes place so rapidly that on distillation the 

 homogeneous equilibrium continues, and so we can perfectly agree 

 with Ramsay and Young's conclusion about the results of the two 

 methods. 



The dynamical determinations have all been made below one 

 atmosphere; so that at higher pressure a comparison between the 

 two methods is not possible. 



The above mentioned slight difference between the dynamical and 

 statical determinations reveals itself of course also in the value of 

 the boiling-point. While Ramsay and Young found 21.7° for the 

 boiling-point, our line yields 21.2°. The deviation between these two 

 values is small in compaiison with the greatly divergent oscillating 

 values which are found in the literature and which have all been 

 determined by a dynamic way. A survey is furnished by the 

 following table. 



TABLE III. 



Statical 22°.5 (750 mm.) (Nadejdin) 



21°.2 (see above) 25—26° (Hasenbach) 

 Dynamical 26° (Gay-Lussac) 



21°.6 (Thorpe) 26° (Geuther) 



21°.7 (Ramsay) 26° (Bruni and Berti) 



22° (Peligot) 28° (Dulong) 



The equilibria between the solid substance and the gasphase set 

 in much more slowly than those between liquid and gas. To be able 

 to indicate the point of intersection of the solid-gas line with the 

 vapour pressure line in fig. 3, we have determined the melting-point 

 under the saturation pressure by slow heating starting from the 



the reason given in the text that R. and Y. have only examined equilibria between 

 liquid and gas, resp. undercooled liquid-gas. In R. and Y.'s observations cited in 

 the paper by G and D. some misprints seem to occur. 



