1133 
omtnn An Wn 
—hu rz —hu H ce 
AM == — iene “oS |. En ‚Hu, 
50000 (19) 
2 
i ips (hHu,)’ te sin x sin @, sin 6, dr dy dO, d6, dw dip, 
in which we may take oo as upper limit for r. For the calculation 
of (19) we develop the expression in series using (4), (8), and 
(11). Viz: 
hu H 2 2 5 1 
— € Q + eae = 2+ a Hu, (2-38 2*) — 
(20) 
fi Ol) (423) — — WR (4308241529) . 
hu He) o* pupae 
é qo mls heg When mae "© +4 4 (hvg y pie U 4 + 
a o° 1 os 
de hv, hom. re WD $ (hom) . re DE 6 (Av,)" im Bar (21) 
13 11 
— 4 (Avg)? bd ° wtp thy (hUm)? se wo (he ) : Pp? 
CO en ri? 2 q° m ee 6 m r ae 
„We may then calculate the different terms of (19) separately. 
The term 2 in Wh gives no contribution. 
Only the term: 5 bin, (2—32’) in (20) can give a contribution 
proportional with H. 
We can easily prove that w/(2—32*) where / is a positive 
integer, gives 0 when integrated with respect to y and w. 
From this it is evident, that the directing action of the quadru- 
polar forces on the susceptibility has no influence that might be 
expressed in (2) by a A independent of H. 
Of the terms written in (21) only ¥?® and ®° give contribu- 
tions when multiplied by 2—3 (2?; viz when we put 
1 
Whip, BORLAND GAT Sk ble (OA 
Rens Rt 23 
Mm = OTE n0* (hvg)* . hom. habana 
und 
ln4 
A M= 75 7 3 no? (hum )* Mebel ED: ae IC N (236) 
Further W? gives when multiplied by 4—30 2? + 15 @*: 
