Gr. B Gr. F 
AX + 0"55 + 0"49 
Aah a — 2.64 — 1.80 
Y (Decl.) — 3.08 — 2.43 
mean (weight 2 and 1) — 2.79 — 2.01 
Z + 2.03 + 2.70 
Let us now examine first what is found for the luni-solar pre- 
cession p. 
1 find from Am: 4p = + 0".06 
from An : Ap=-+0.75 
or, if we adopt the correction to the motion of the equinox, 
from Am : Ap = + 0".39 
from An : Ap=+0.75 
from which, again combining with weights 2 and 1: 
from R.A. and Deel. : Ap = + 0".51. 
From the two values for Ap, found if we adopt Auwers’s New 
System, follows in the same way 
from R.A. and Deel: Ap = + 0".53. 
The agreement of the two results makes it probable that systematic 
errors dependent upon « and d cannot have a great influence upon 
our results. 
Taking the mean, therefore, I get as final result 
Ap Newcoms = + 0".52. 
As Newcomp’s final result of 1896 remains quite unchanged by 
taking the systematic differences of distance of the stars into account 
These Proc. 18. 692) my result is 0". greater than his. 
From my value for Ap follows 
Am Nrwcoms = + 0".48 
An Newcoms = + 0 .21 
The values for the yearly precessional motions which follow from 
the research here detailed are therefore : 
Yearly precessional motions for 1850: 
p =lunisolar precession — 50"3736 
p = general precession = 50"2505 
m == precession in R. A. = 46"0759 
nm = precession in Decl. = 20"0532 
P = Newcomp’s constant = 54"9124 
