of Liquids at their Boiling-points. 

 Table II. 



29 







Loss of weight 











(corrected). 



L 





Name. 



B. 





Ratio p 



L 2 " 



L r 











Liquid. 



Benzene. 







Normal Hexane. . 



747-3 



12-086 



9-993 



0-827 







762-4 



8669 



7-369 



0-839 



79-2 cal. 



Methyl Alcohol. . 



761-9 



6-379 



17-585 



2-757 







730-2 



6-112 



17-018 



2-784 



261-6 



Formic Acid * ... 



755-8 



12-784 



16-309 



1-276 







753 



11-770 



14-998 



1-274 



120-4 



Methyl Iodide . . . 



753-8 



34-617 



17 022 



0-492 







753 



37-614 



18-252 



0-485 







765-6 



33800 



16-258 



0-481 



459 



Ethyl Iodide 



767-6 



32-355 



16-572 



0-512 







763-4 



35-988 



18-127 



0-504 







762-8 



34-881 



17-306 



0-496 



47-6 



Ethyl Bromide... 



7675 



25-240 ' 



15-692 



0-622 







767-9 



28-412 



17-402 



613 







767-3 



27-053 



16-994 



0628 



58-6 



Chloroform 



752-8 



23-621 



14-657 



0-621 







7510 



27-751 



17-029 



0-614 







759-8 



21005 



13-050 



0-621 



58-4 



OCl 4 



762-2 

 759-3 



39-836 

 33-595 



19-684 

 16-444 



0-494 

 0-489 



46-4 





Aniline 



765-6 

 766-9 



15-493 



13-388 



18-920 

 15-609 



1-221 

 1166 









764-5 



15-308 



18-072 



1-181 







757-4 



14-269 



17-882 



1-253 







7490 



13-671 



16-630 



1-216 



113-9 



§ 5. Other observers have suggested to the author from 

 time to time that a loss of weight must be experienced 

 from surface evaporation during the preliminary heating in 

 the vapour jacket, especially in the case of those liquids which 

 ontain much dissolved air and lose it as their temperature is 

 raised : the amount of loss was quite unknown, it must almost 

 certainly be different for different liquids, and it might quite 

 possibly introduce a considerable error into the results. 

 Experiments have now been made in order to find out how 

 great this loss of weight really is, and what the relation is 

 between the losses experienced by different liquids in equal 

 times. The apparatus was set up as for an experiment, the 

 vessels being weighed ; they were then heated by the vapour 

 jackets for measured times, allowed to cool, and weighed 

 again. Table III. shows the results for benzene and alcohol. 



See also Comptes Rendus, cxxii. p. 1333 (1896). 



