( 590 ) 



ro°c.— ioo°c.~i 

 Therefore I have calculated L ''« JiooomTr. by means of the 

 data for 20^ C. and 100^35 0. With neglection of the deviations from 

 the absolute scale for the hydrogen thermometer at 20'' C, Ba, ooc. 

 was determined by means of rectilinear extrapolation. This gave 



Ba, ooc.= 0.0,499, 

 whence 



Aa, = 0.99950. 



With these new data we derive from formula (1) of this section 



%„ = 0.0036616. 



From the data for Ba of table II of the preceding Comm. and 

 7ooc. = 273''.10 K we may determine in the way mentioned in § 2 

 of Comm. N". 97^ the corrections of the readings of the helium 

 thermometer of constant volume with a given zero pressure to 

 the absolute scale. They have been calculated for a zero pressure 

 of 1000 m.m. and are combined in table I where the remaining 

 columns have the same signiticatiou as the corresponding ones of 

 table XVI of Comm. N». 97^ 



The corrections indicated with (a) are derived by means of the 

 values of Ba.^Pc. fi*o>n t^ie direct determination, for {h) we have 

 used the value which is recalculated with Ba2o° (comp. the preceding 

 Comm.). It is probable that on account of what has been said in the 

 preceding section those of column {b) are the most reliable. 



§ 3. Determinations of other observers. 



For a comparison with tlie results of the two preceding sections 



