788 Dr. R. D. Kleeman on the Nature of the 



Table IV. 



Name of liquid. 



%v. 



% sl rn\. 



p V2^y/e. 



Pc (™\ 



1/2 7/6 



V^^' 



Di-isobutyl 



• 6 H 4 



50 



45-68 



304 xlO 3 



607 



665 



Di-isopropyl 



• C 5 H 12 



32 



293 



211 „ 



658 



719 



Isopentane 



• O s H 12 



32 



29-3 



208 „ 



650 



710 



Hexane 



• C 6 H U 



38 



32-76 



243 „ 



640 



742 



Heptane 



• 6 H ie 



40 



36-76 



276 „ 



690 



751 



Octane 



• QjH 18 



50 



4368 



311 „ 



621 



711 



Fluor-benzene 



• C 6 H 5 F 



33 



30-12 



209 „ 



635 



695 



Bromo-benzene 



. C 6 H g Br 



39 



34-70 



259 „ 



659 



740 



Iodo-benzene 



. C 6 H 5 I 



42 



37-03 



282 „ 



672 



763 



Chloro-benzene 



. C 6 H 5 C1 



36 



31-72 



243 „ 



674 



764 



Hexamethylene 



C 6 Hi2 



36 



34-76 



229 „ 



635 



658 



Stannic chloride 



. SnCl 4 



38 



34-70 



258 „ 



678 



743 



Benzene 



• C 6 H 6 



30 



26-76 



203 „ 



676 



758 



Ether 



. C 4 H 10 O 



30 



27-84 



199 „ 



664 



716 



Propyl formate 



■ C 4 H 8 2 



32 



29-84 



220 „ 



688 



737 



Ethyl acetate 



C 4 H 8 2 



32 



29-84 



217 „ 



677 



726 



Methyl propionate .. 



. C 4 H 8 2 



32 



29-84 



213 „ 



666 



714 



Propyl acetate 



• O 5 H 10 O 2 



38 



35-30 



239 „ 



628 



676 



Etbyl propionate 



• C 5 H loO-2 



38 



35-30 



254 „ 



668 



720 



Methyl butyrate 



• C 5 H 10 O 2 



38 



35-30 



253 „ 



667 



718 



Methyl isobutyrate .. 



• CoH l0 O 2 



38 



35-30 



236 „ 



622 



669 



Isobutyl formate 



• C 5 H 10 O 2 



38 



35-30 



265 „ 



697 



750 



Methyl acetate 



• 3 H 6 O 2 



26 



24-38 



179 „ 



690 



735 



Ethyl formate 



. C 3 H 6 2 



26 



24-38 



185 „ 



711 



758 



Carbon tetrachloride . 



. CC1 4 



32 



27-30 



214 „ 



670 



785 



Ethyl butyrate 



. C R H lo o 



44 



40-76 



287 „ 



652 



704 



Ethyl isobutyrate 



. C 6 H 12 2 



44 



40-76 



287 „ 



651 



703 



Isobutyl acetate 





44 



40-76 



286 „ 



651 



702 



Methyl valerate 



• C 6 H 12 2 



44 



40-76 



289 „ 



658 



709 



Ainyl formate 



• C 6 H l2 2 



44 



40-76 



297 „ 



676 



730 



Monochlorinated \ 

 chloride of ethyl J 



C 2 H 4 C1 2 



26 



22-84 



391 „ 



684 



778 



Chloraldehyde 



• 2 H 4 C1 2 



26 



22-84 



415 „ 



725 



825 



Carbon dioxide 



■ co 2 



12 



11-46 



173 „ 



654 



685 



Methyl formate 



. C 2 H 4 2 



20 



18-92 



305 „ 



694 



733 



Hydrochloric acid.... 



. HC1 



8 



696 



110 „ 



622 



715 



The investigation which led to the equations given at the 

 beginning of this paper was based on the assumption that 

 the attraction between two molecules of the same kind is 

 given by </>(Y)(2ca) 2 , where (f)(2) is a function of the distance 

 between the molecules. The present investigation shows 

 that the law of attraction may also be expressed in the form 

 <£0)(2 s/m x y or cj>(z)(Svy. ' 



So far we have not yet obtained any information as to the 

 form of the function cf)(z) . In order to investigate this point 

 it will be necessary to develop a different method of investi- 

 gating the nature of surface-tension than the one adopted in 



