r 
NEW OBSERVATIONS OF THE PLANET MERCUUY. 
430 
TABLE I. 
PHASE ANGLE AND ANGLE OF LIBRATION. 
Maxima axd Mixdia between Sei'tember, 1896, axd Makcii, 1897, ArAgiiiNCTos Mkan Ti>if. 
In Aplieliou ; Libration nil 
At Greatest Libration W. 
In Perihelion ; Libration nil 
At G-reatest Libration E. .^ 
In Aphelion ; Libration nil 
At Greatest Libration W. 
In Perihelion ; Libration nil 
At Greatest Libration E. . 
In Aphelion ; Libration nil 
At Greatest Libration "\V. 
■- X- _jj 
11 
Sept. 
Sept. 
Oct 
Nov. 
Dec. 
Dec, 
Jan. 
Feb. 
Feb. 
Mar. 
Proof of Long Period of Rotation. 

5 hours 
23 .077 
23°.G77 
23°.G7T 
23°.677 
23°. 677 
iiring the positio 
r 
drawings, we find for its longitude the following 
Vol. XIT. No. 4. 
2. 
of Testudo 
