Relations of Liquids and their Saturated Vapours. 101 



stants of a few liquids belonging to the ether-node, brought 

 together as an example of the mode of arrangement adopted 

 after some experience. 



Note. — The number in line 12 under turpentine is rather 

 small, to be in accordance with the law of uniformity. The 

 paucity of observations on this liquid perhaps may account for 

 the want of precision. The constants of expansion for the hy- 

 drochloric ether were taken from M. Drion's observations, and 

 the others from Pierre; hence perhaps the inequality at 16, 

 19, 20. 



No. 



13 

 14 

 15 



16 

 17 

 18 

 19 

 20 

 21 



o> weight of molecule. 



Boiling-point 



Spec. grav. at 0° 



h 



v at t . 

 P at t . 



h . 



— at t . 



Cat r . 



\ju at t. 



— at r. 

 C« . 



r-r- at T. 



at t. 



Hydrochlo- 

 ric ether, 

 H 2 C.H2Cl2. 



32* 

 12°-2 



0-920 

 144 







1-000 

 3474 



414 



96-6 

 3115 



89-5 

 21-63 



hyp.log(-^)=P (i 



vdt 

 dv 



at0° 



vdt 

 dv 



at t 



vdt 



1 1( 



dv 



h dl 



vdt 



1 n+ 



dv 



^£4 



at r 



-1). 



185° 



365 

 459° 



319 

 673 

 673 

 4-67 

 19-36 

 91 



Hydrobro- 

 mic ether, 

 H 2 C.H5Br5 



38°-5 



1-473 

 1586 



27° -4 

 1-038 



38-31 



4-14 



254° 

 2-95 



528° 



3-32 

 749 

 694 

 4-38 

 18-11 



Hydriodic 



ether, 

 H 2 C.H"il2' 



Chloro- 

 form, 

 ClC*.HflCli 



78 



71° 



1-975 

 177 

 62°-4 

 1-082 

 4267 



410 



479 

 3735 



2111 



312° 



2-89 

 586° 



3-31 

 887 

 764 

 4-32 

 18-00 

 95 



60 

 60°-8 



1-525 

 1711 

 51°-4 



1-066 

 41-96 



4-08 



61-9 

 3716 



88-6 



21-71 

 17-23 



(282°) 



(2-97) 

 (556°) 



(3-26) 

 839 

 759 

 4-43 



1809 



97 



Ether, 

 H 4 C 2 .H05 



37 

 35° 



0-736 

 1567 

 24° 



1-038 

 5215 



3-00 



92-3 

 3415 



65-5 



21-79 

 17-31 



224° 



301 

 498° 



3-18 

 614 

 562 

 3-59 

 10-77 

 61 



Turpen- 

 tine, 

 H 8 C 5 . 



68 



157° 



0-872 

 226 

 155-4 



1176 

 91-7 



2-46 



63 3 

 4305 



470 

 191 



461° 



2-34 

 735° 



3-26 



1080 



813 

 3-74 

 919 

 42 



§ 52. The relation between liquid molecular volume and liquid 

 molecular cohesion (line No 11) strikes the attention as being 

 undoubtedly causal. Also the relation exhibited in line 12 



