TERRESTRIAL MAGNETIC INTENSITY. 



13 



for correction, and the corrected numbers. These are contained in Tables V. and 

 VI. I have thought it needless to incur the laboiu- and expense of printing the 

 individual numbers on which the mean results are founded. They are however 

 preserved in a condition adapted for immediate reference,* 



Table V. 



* Many of the numerical calculations contained in the remainder of this paper, have been made 

 by two of my pupils Messrs Irvine and Edward, under my own inspection and revision. 



