( 780 ) 



in the second column the same temperatures measured on the absolute 

 scale. The two following columns contain the corresponding values 

 of the special B' j and of the corrections to the absolute scale L t s 

 calculated according to formula (2) for a hydrogen-thermometer of 

 constant volume with 1090 mm. zero-point-pressure. The last column 

 gives the corrections for the normal hydrogen-thermometer. 



The values for - - 103°. 56 and - - 135°.70 are less certain than the 

 others (compare § 10 and § 11 of the preceding communication). 



With very close approximation the results of the last column may 

 be represented by the formula: 



Lt 



100 



where 



100 



+ c 



t 



+ < ] 



00 



(4) 



a— - 0.0143307 

 6 = 4- 0.0066906 

 c = -f 0.0049175 

 d— -f 0.0027197 



The greatest deviation is three units of the last decimal. 

 The formula gives the value Lt = 0, both for £=-|-10Cr and for 

 * = 0°, while A*=-L-0°.14 would follow from it for t = — 273°. 



§ 3. Accuracy of the corrections. 



The influences which may cause errors in the corrections, are of 

 two kinds. 



1. Errors in the values of B r ■ 



2. Errors in the data which have been used in the further derivation. 



l ) The difference with Coram. N°. 97a remaining after the correction of the 

 preceding note is the consequence of an improvement applied in the calculation. 



