( 822 ) 
Witho it being corrected for lack of uniformity in the field the 
means give the following values: 
The corresponding results obtained by the method of the magnetic 
240.6.10- 6 and 269.3.10~ 6 . 
The differences between the results as obtained by the two methods 
are scarcely 0.4 %• This gives us great confidence in the ellipsoid 
, method even for this particularly difficult determination, and it shews 
that the method is also suitable for absolute measurements if only 
the necessary care is taken to ensure the uniformity of the field and 
the correctness of the shape of the ellipsoid. 
We must remember that there was a great number of absolute 
