( 420 ) 



uf pressure aiHouiiliii.ii' lo no iiioie iluiii 0.5 niM., Ilio c-onespoiidins 

 eurivctioii lor llie leiiiperaliiru niigli( \)(' iie,nie('le(l. \U)y llie deler- 

 luiiuitiou of the leniperalure of tlie- sleel (•a|)illary o llieiiiiuiueters 

 were suspended along' (he eapillai-v. Vov iho deleriniiiatioii of 100° 

 a paper sereen liad been a|)plied lo lurn off the rishi*-- current ot 

 lieated air; the s[)iral wilh cold \va(ei\ however, ahovc the wool- 

 packing of the boiling api)aratus, had been omitted. Tiie dilfercnce 

 of temperature between the thermometers amounting to no more 

 than 2°, this was permissible. 



The corrected indication of the aneroid barometer amounted to 

 765.4 mM , from which for the temperature of the boiling-point 

 follows 100°.20. 



§ 2. Values of prx . ■ 



In the subjoined table the results of the determinations have been 

 represented. The columns have the same meaning as in table XIX 

 of Comm. N". 9y«. 



§ 3. liuUi'idnal virlal-coe/ficlents. 



As has been done in § 12 of Comm. No. 97« we may avail 

 ourselves of the data of table I to derive the first two virial coefücients 

 for every isotherm. On accouut of the small densities which occur 

 in these' measurements, in formula (1) of § 12 of Comm. No. 97«, 

 y^A , J'^A iuid Fa have been put = 0, so that the formula reduces to: 



^ ^ i^A , Ca 



(1) 

 \ 



