of Superheated Vapours. 



417 





millims. 



951 



-2-95 



971 



-295 



97-6 



-2-95 



There is now evidently a somewhat smaller quantity of vapour 

 in action than at the commencement of the experiments ; and 

 this is recognizable in the feebler tension of the vapour. 



The influence of this adhesion shows itself also in the series 

 of the following Tables for alcohol. I have on each occasion 

 been able to convince myself of this by simply observing the 

 tubes narrowly : to a practised eye the difference in behaviour 

 between such an adhering substance and one that does not 

 adhere, in the vicinity of saturation and in the transition to sa- 

 turation, is not to be mistaken. It only remains surprising that 

 in my earlier investigations I found alcohol not to be one of 

 the number of adhering substances. It may, however, be re- 

 marked that then and now I investigated two different prepara- 

 tions, and it is quite conceivable that the slightest shade of differ- 

 ence in preparing the material may call forth this property. 

 Tables XXVII.-XXXIII. contain the observations on 



W 2 =59M. 



Alcohol. 

 Table XXVII. 

 W = 668. 11 = 51-465, 



c=l-2545. 





1 





Vapour- 



Air. 





Vapour- 



t. 



H. H corrected. 



1 

 1 



w r 



volume. 

 v. 



volume. 

 V. 



f 



aressure. 



o 



20 



1 

 f considerable nega- 

 \ live H. 

























362 



+397 



saturated. 













38 



451 















39-5 



487 













millims. 



43 



52-3 





277-98 



317-6 



204-7 



132-41 



132 



52-5 



53-5 





276-48 31875 



2020 



133-36 



136 



64-5 



55-6 





273-85 321 



199-3 



13577 



143 



825 



56-4 





272-85 321-35 



1972 



135-84 



149 



Table XXVIII. 







W 2 =700-5. W = 761. 11 = 299-388. 



c=l-6 



33. 



54-6 



negative. 



J much sa- 

 \ turation. 













58-6 



+7-5 





381-59 



315-9 



3181 



304-46 



320 



60 



7-8 





381 



316-3 



3176 



305-57 



322 



67-3 



8-4 



... . 



38012 



3169 



31615 



307-72 



330 



70-5 



8-4 





380-12 











78-2 



87 





37963 



31685 



3151 



308-90 



342 



88 



8-!) 





3793 



316-6 



3142 



309-38 



353 



921 



8-8 



8-9 



3793 











98 



8-9 





3793 



3161 



3137 



309-26 



1 



363 



Phil 



. Mag. 1 



3, 4. Vol. 



45. N< 



). 302, . 



Tune 18? 



'3. S 



>E 



