III. 



Trimethylamine: ((7^3)3^. 



Maximum Pressure H 



in mm. mpr- 



cuty of 



O'-'C. 



ill Dynes 



Surface- 

 tension ■/ in 

 Erg. pro cm^. 



Molecular 

 Specific Surface- 



gravity d.Q energy // in 

 Erg. i)ro cm2. 



—73 

 -52 

 -32 

 —19 

 — 4 



0.827 

 0.737 

 0.678 

 0.627 

 0.583 



1102.5 



983.7 

 897.8 

 834.8 

 777.2 



24.8 

 22.2 

 20.0 

 18.6 

 17.3 



0.748 

 0.725 

 0.704 

 Ü.691 

 0.675 



456.6 

 417.4 

 383.5 

 361.0 

 341.1 



Molecular weight: 5910. 



Radius of the Capillary tuhe : 0.04595 cm. 

 Depth: 1 mm. 



The liquid bulls at about -3° C; even at —76° C. it was ttill as thin 

 as water and no trace of crvstallisation cnuld be observed. The fp'cific 

 gravity at 0° C. was: 0.6709; «t -79° C. : 0.7537; at i° C. is (/^o =^ 0.6709— 

 —0 001048 t. The t. mperature-coefficieut of ." decreases slowly with rising 

 temperature: between —73° and -52° C. it id: 1.89; between —52° C. and 

 — 19° C, : 1.71; and between - 19° ar.d —4° C. : 1.33 E-g. per degree. 



IV. 



