"We are now prepared to place side by side the relations obtained 

 from the comparison of T, C. S., and R.^ with the standard S in melt- 

 ing ice, and the values found by direct comparisons upon the universal 

 comparator. The constant reduction from T^'i to T^^ = 6.9 fi is first 

 applied to the observed values S — T, S — C. S., and S — R.^. 



3Ieters. 



From Comparisons upon the Universal From Comparisons with Bars in Melt- 



Comparator, iug Ice. 



We have now the data for the direct comparison of the independent 

 prototypes T and C. S. of the Metre des Archives, both at 0° and at 

 16°. 67. Representing the Metre des Archives by A, we have: 



According to Trcsca. According to Pernet. 



T\ — 118.9, = ^ at 13°.70 C. C.S. -\- 310.0, = J at 0° C. 



