198 A. D. Bache on Declinometer Observations. 
inequality. The complete results of the computations, as in the 
other case, will be given in the Smithsonian Contributions to 
Knowledge, and the present paper will contain merely a gene 
account of the results. 
The normals, or means, freed from the disturbances, are used 
in the discussion, avoiding thus the necessity for rejecting the 
observations of months in which disturbances are frequent. The 
same course is followed by the Rev. Professor H. Lloyd in his 
discussion of the Dublin observations and also by General Sabine 
in the third volume of the discussion of the Toronto observations. 
of nearly 10} minutes and the winter months one of 51 minutes. 
Diagram B shows the same results in a different form, the mean 
early curve of the first diagram ~ being straightened out to 
rm the axis of the second (B). The curves represent the wil 
* This Jour., [2], vol. xxix, p. 36. 
