68 Scientific Intelligence. 
If the third equation is rejected, the other two will give the 
mean motions of two of the planets when two are known. I have 
‘found in this case, 
n* =109256""719-+-2491 
vi = 43996"°127 2491' 
mii — 15425'°172— 18441320’ 
nvili— 7868"-694— 32441241’ 
in which 4 and #’ are corrections to be determined after the revis- 
ion of the theories. I presented my argument concerning the es 
tablishment of these equations to the American Academy last 
evening. Even if they should be finally rejected, it is evident that 
in the present uncertainty, the corresponding planetary inequalities 
are so exceeding long, and of such uncertain length, that it wi 
necessary to present the corresponding perturbations in the same 
they were exact 
R Eclipse.—The telegraph informs us that the eclipse ob- 
servations on the 12th of December were successful, the weather 
being very favorable. 
The expedition from England under the charge of Mr. Lockyer 
was destined for Jaffua in the island of Ceylon. It was join 
upon the way by Jannsen and Respighi, from which we presume 
that the original design of the former to go to Java was given up. 
It was expected that East Indian expeditions would occupy 
one or two stations near the Malabar coast, and one near Trichmo- 
oly. Also expeditions from Australia to the line of the eclipse 
across the northern part of that continent were projected, and 
3. Star Maps—Suggested Improvement ; by E. 8. Mantis, 
Wilmington, N. C. (Communicated.)—All those who use star maps 
The following method is suggested as, in a measure, capable of 
remedying the trouble. Instead of stamping the stars on the 
and if the map is placed at or near the instrument, one eye MaY 
4 
