Table XIX.—Comparison between calculated and observed variation of vertical force. The unit of force is C.G.S. 10 
The first four terms of the series a-^ cos t + sin t + cos 2 t + sin 2 t have been taken into account. 
494 
PROFESSOR A. SCHUSTER ON THE DIURNAL 
St. Petersburg. 
Observed 
1878., 
00 Oi ^ 
C<1 C<l 
1 + 1 1 
ooi—loO'^t^oascocvirHOcp'-.pMcocor-HOco-^^^i^o 
654icb6QrLibco + 65QOrH-^ + L + + ocbiOQo + ':f + o 
coo<i 1 p— icqcqr-iF-H i—ico'r^co i 
1 i I+ + + + + + + +I 1 1 1 1 i 1 1 1 1 1 1 1 I 
Calculated 
from 
inside. 
IN. ^ lO 
r—! i-H 
+ 1 + 1 
pMMCogsi^occo^cpwr^ocicpc^rHCOp^aioM'TS 
+ G<ido + '^ + + + + + o + + + + + + + + + + + oi4 
CO'^tOOJr—Its..—IC<lp-HOO'^COi-HCiOO:C>CMG^C5tD(Mr^OOO 
C<JrH nH,—icqc^ico—l.—Ir-I.—1 
+ + + 1 1 1 M 1 1 1 M 1 1 1 1 + + + + + + + 
Calculated 
from 
outside. 
I>- O 1-0 
Ci O ^ CO 
rH 
1 + 1 + 
005lN.C^C5iO>OlN.COi-HlN.iOOI>COi-HJN.COOiOO^r^COL;^ 
i^coA4d5A(i^"^630Dr^iio6oi^d5 63o6ocb^6o6or^o63 
C00003C0 05 03^^030COC0 10^-??CO 03C0O^r^C0JN- 
I-H ^ rH »-H rH i-H i-H rH i-H r—! i-H 
1 1 I+ + + + + + + + + + + + + +I 1 1 1 1 1 1 
Observed 
1870. 
^ lO CV 00 
!—1 0^ lO CO 
rH r-H 
+ + 1 1 
0-^COOC5'^O^X^CO'XQOOCO:OOI^C3cp(^r^C^:0 0 
lOG3(i)r^T^01^fHCOib6365C003001^Q06ocbA(r^od5iO) 
i0i:^05C0C00000cOi-H^C0Oi:^>-H03O’^T-HC003r^C0C0'^ 
I-H I-H 1-H r-Hi-Hi-H i-Hi-H03 03 03i-H^ 
++++++++++I11111111I++++ 
Greenwich. 
Calculated 
from 
inside. 
O O Oi 
lO CO CO 
CO 1^ 
+ 1 + 1 
OC003q3-^G3pC0C0(XC^05Oipp03'^^-pOC0^C^Oi> 
05636ooi6ooo5i:^d5i>6^c:'r^io6oi>-<^'^rHo65ioi^'^ 
COO:'^1N-COC003]:^1N*-H^05'^ — OOCO^O'^101^^05^05 03 
^C003 O3COC0COC0O303O3r—( i-Hi-Hi-H i-H03^’^+O 
++++IIII11I1IIIII1++++++ 
Calculated 
from 
outside. 
lO C<1 O 
CO CO t— ( 
03 rM 
1 + 1 + 
ppppp^ppp-^pp^ppr^qo^pppp'^i^p 
ijo^'^r^oo363cbQOQOcbibibQoocbocj5d3cbibo63r^ 
^t^r^iO)r^i:^’^r^coco05iO)0300C5r^coo300500^co 
CO 03 I-H r— < 03 03 03 03 i-H rH i-H i—H i-H i-H rH 03 CO CO 
1 1 1 I+ + + + + + + + + + + + + +I 1 1 1 1 1 
Observed. 
C3 0:> r-i 03 
lO 
1 + 14 
I-H r-H CM <7^ 
rO 13 rO 
OpI^^pC0pO"^03C0i:^i-HpC0O50:)Q0ppppppp 
cdrHibcb6orHOrHi^d3co6od5ibr^63ib6od3idd5cbcjoc)o 
05I>*CO ^OOOOGO'^CO rHr-H rHC0COG0O5 
I 1 1+4" + + + + + + +! 1 1 1+ + +I 1 1 1 1 
Lisbon. 
Calculated 
from 
inside. 
CO CO 
lO !>• 03 lO 
^ ^ CO 
+ 1 + 1 
Opl:^I>^J:r^C0000505l:^00003iOI^!-Hpppl^ppp 
t^ic>cbiio'4^cocb6ooid^cbd56od5r^cbd5C3'^dDrHijoo 
00i003^c0c00'^005i:^l:^03c000i0c0iit)i0)c0c0 0 0505 
I>iC0"^i-HrHC0iOi0)lOC0O3rHrHi-HrHO3 0303i-H OllOCOlN* 
++++ 11111111 M 11111 +++++ 
Calculated 
from 
outside. 
CO 03 1C ^ 
03 03 CO 
CO I-H 03 
1 + 1 + 
OCOppp-^OCOCOC^OO^OC^prHI^ppppl^pp 
6orHcb6orH65if^oiibocooo6o650cbd3r^cdd565aod..QO 
05O03Oi-HC00503r^C0IN.C0'^i0i—'r^03 03iOrHiC^005 
lO iO CO r—H 03 CO CO 03 rH rH i-H 03 03 rH i-H CO lO lO 
1 1 1 I+ + + + + + + + + + H — I- + + H — hi 1 1 1 
Observed. 
liO O 03 CO 
CO CO lO I-H 
1—I I-H 
1 + l^+ 
ppppa)^ppc3rHpqopcpc^pppp^QOpq3p 
d^Oir^Ancboooiibdicbiocbcboooox^i^didj^fioioioco 
rHCOi:^COlOJOrH0305’^OOCOrHrH^OOrH03 05 03CDt^COr-i 
CO 03 rH rH 03 03 rH rH rH rH i-H 03 CO 
1 1 1 I++4 + + + + + + + + + + -I — h+l 1 1 I 
Bombay. 
Calculated 
from 
inside. 
a:> 05 03 
I-H lO iO> 
03 I—i 
+ 1 + 1 
O'^rHiOpC0pC<JQ0pppp'^ppppp^ppp00 
dod5air^r^d3cb^cbcbi^d3o4f<cocbr^cb63C5r^i>C50 
C500C£)C0rH^C0OC0^'^00-^Oi0C0C0'^P03rHiC^00i:^ 
03 rH I—H rH i-H rH rH 03 03 03 03 rH rH 03 CO CO CO 
+ + +I 1 1 1 1 1 1 1 1 1 1 1 1 1 1 I+4- + + + 
Calculated 
from 
outside. 
r—H 00 
^ CO lO 03 
I-H -H 
1 + 1 + 
pppq3pppcxpppppppqopppppppp 
^co6ocbi^C5'4^r^d50cbi^6o63^6oi^^cod3AHih»d3ooo 
a5rH03-=^*OOa5COiO)rH C0C0^C0a5i:^rHO300l:^^COiO 
rH rH rH rH rH rH rH rH 03 03 03 
1 1 1 + + + + + + + + + + + + + + + + 1 1 1 1 1 
Observed. 
i 
03 05 f-H 00 
03 03 
1 + 1 + 
I-H ^ Cl c? 
rO e rO 
OlOCMt^lOOOOOrHr-lC<lI^O.-HtDpp'^P'^pppr|-l 
+ 6q + hfirLoo + + + + o + + + Ai>.'^(L + 4jhfi + + 
<X>'^r— 1 CMCOCOC<li—1 IC<1T0'^I)O-^C0 t— li—I'e^Ot^t^ 
1 1 1+ + + 4 + + + + + + + + + + + +I 1 1 1 1 
Astronomical 
time. 
oOrH01CO'^iO)COI>-OOa50rH03COTf<xOCDl>«OOO^OrH03CO 
jn-j rH rH rH rH rH ^H rH rH rH rH 03 03 03 03 
