Researches on Solar Physics. 325 
rington’s sun, had drawn on it lines of longitude for every 10° 
from —90° to +90°. This sheet being applied in a proper man- 
ve was drawn, in 
which the abscissv represented the longitudes of the visible disk 
his curve was 
simply by connecting together by means of straight lines the 
one series the planetary configurations retained - a considerable 
extent the same character. In the following table the results of 
May, we think, be considered to be an observational fact. 
Am. Jour. Sc1.—Srconp Series, Vo. XLIII, No. 129.—Mar, 1867. 
42 i 
