1884.] 605 [Chase, 
456. Harth’s Mean Radius Vector. 
The mean radius vector of the chief centre of condensation is harmont- 
cally found by the methods of Notes 428 and 434, 
Js = .00607723 miles. B.7837055 44 
4's = 8962.8 8.5980022 45 
Vo ta "= = 4,90748 . 6908538 46 
bx 4 5740813 4 
(46) Bn elroy 1.264885 1 48 
(48) +. (87) — (85) 7,9658167 49 
99879 T.9994742 50 
(49) — (50) 7,9663425 BL 
The value of m) -- ms, which represents this mean distance, may be 
found by the formula : 
8 
Me 
4 ee m1, + (Jy X 815581497) = m, + m, 
8 
8 (51 — 45) + 2 (85) + (45) — (44) — 2 (87) = (11) 
457. . Second Linkage of Harth and Jupiter. 
The linkage between the superficial gravitating energies of Earth and 
Jupiter, which is shown in Note 426, may be computed as follows : 
4 (24 + 42 4 48) 2.9761080 52 
(38 +. 52) B.7721646 58 
(26 + 46 — 58) 5.6849261 54 
(27 ++ 54) 1.9662549 55 
(38 ++ 54) 2.4809877 56 
2 (56 — 46) +. (54 — 45) B.OLT1917 57 
(48 + 54 — 45) 1.087152 58 
458. Other Terrestrial Linkages. 
The linkage of Earth, Moon and Jupiter, which is represented in Note 
448, introduces the following logarithms, 
60.2778 1.78015'74 59 
(59 +- 26 -+- 23) 5.5167054 60 
The linkage of Earth and Neptune (Note 440) with Harth’s oblateness 
gives the following logarithms ; 
} (45 — 44) 2.9071484 61 
(61 -L 85) 8.058288 62 
86164.08 4.353268 63 
(63 — 62) 16.9824 1.2299980 64 
Cie ey 19384.58 42874564 65 
2 (64) 288.4 2,.4599960 66 
