66 
MR. LUBBOCK’S RESEARCHES IN PHYSICAL ASTRONOMY. 
The reader is requested to make the following corrections. 
The expression for r~ 3 Phil. Trans. 1830, p. 345, should be 
r~ 3 = a “ 2 1 -}- e 2 ^ 1 -f -^-e 2 ^ + 3e^l + e 2 ^ cos (nt —v r) 
-f ~ e 2 ^ 1 + e 2 ^ cos (2 n t — 2 •&) + ^ e 3 cos (3 n t ~ 3 w) 
77 
■+■ — e* cos (4 n t — 4 tj) 
8 
The third term (multiplied by d t ) in the equations of p. 23, line 4 and 6, and 
the second term in the equation of the same page, line 1 1, must be suppressed. 
p. 30, line 21, read + m, (cos 2 -k. - for m j { - ~ (cos^ - e -t l < - j 
p. 32, line 5, read -f m, { ^ Ki &c. for + m, { &c. 
21 a 2 27 a 2 
p. 39, line 9, read — -g- - 3 e e, cos (2 * — z + *) for - — — e e, cos (2 j - s + x) 
p. 41, line 4, read ^ for Jl. 
