137 



Figs. 1 and 2. Absolute Horizontal Force Diagrams. 



O7 C.g.5. 



06 



N 



i JAN. 

 07 e.g. s. 



FEB. 



MAR. 



APR. 



MAY 



JUNE 



JULY 



AUG. 



SEPT. 



OCT. 



Nov. 



DEC. 



1903 



06 C 



\ 



1303 JAN. 



FES. MAR. APR. MAY JUNE JULY AUG. SEPT. OCT. 



Mean, April December, 1902 '0662 



1903 ...... 0-0675 



Nov. 



DEC. 



Difference, 1902-1903 '0013 increase. 



Mean for the year 1903 '0665 



These values are obtained from measurements of the ordinates of figs. 1 and 2, at the middle of each month. 



Fig. 3. Absolute Inclination Diagram. 



85' 



*--.. 



JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEPT. OCT. Nov. DEC. 



Values for Year 1902 indicated thus: 



.1 M ii 1903 " i" : 



Mean, May December, 1902 84 43 '5 



1903 . . 84 36 -8 



Difference, 1902-1903 .... 6 '7 decrease. 



Mean for the year 1903 84 42 7 



These values are obtained from measurements of the ordinates of fig. 3 at the middle of each month. 



T 



