Stonry— The known part of Natures Work. 89 
DisTANCES OF SATELLITES 
FROM THEIR PRIMARIES, 
EXPRESSED IN HartH- 
QUADRANTS. 
(The Sub-section By provides 
Sor all of these.) 
the distance on the Harth’s surface from 
the Equator to the 
Pole. 
There remains the 
w sub-section, the 
sub-section of small- 
Ravi or PLanets, Ex- 
PRESSED IN STAGES. 
(Lhe Sub-section Bw provides 
Sor all of these.) 
Grovur B. 
Group B. 
PLANETARY INVERVALS. 
est Planetary mea- 
PLANETARY INTERVALS. 
aS —— sures. ‘These stand —— eee 
E related to the other = 
x : 3 
3) gis Planetary distances < elie 
>| «&|23/ im somewhat the S| 0) & 
S| sla | Sf) 
re same way as Micro- =| | 
; © 3S s : 0 ° wu | 2 
3 slices >|} scopical intervals | | \ al ae 
2 a) iS ele lated to other |2 Sil) je Sire 
i 4 = Fi) 6 are related to other || o) & = | 
>) . fe) ] | .| os 
s| 2) ei aye Laboratory mea- a 2) gl) Se 
a} 3) S| Sig) sures. They may |= 2 eS e = 
all Ka 
: By. be called  geo- - Vp Ps 
Vee | graphical intervals, tl Sie 
O 000 ay 000 O since in this sub- © 000 000 000 O 
Siero ‘y section we measure |_| eee 
‘Son [ oo 5 the radu of the pla= | Pathaueds}; | | 000 
Se ae nets and distances Radi of } 69 750 
Ses st on their surfaces: ae eee 
Satellites of 1 We sy oo H) BB 
Ges | 0-8 quantities which Mercury, 240 
(Nova), 18 : can conveniently Venus, | 610 
i 43 be expressed as so Harth, || 687 
“jupiter, || | 68 many sta ] Eee. 
109 | oe ee ee Jupiter, 7 000 
192 stage being ten Saturn, 6 100 
19°5 kilems (or 6} Uranus, 2 500 
a miles),! as shown in Neptune,2 600 
39-5 fig. 3. igs 
matellites 55 : 
Saturn. 128 ‘ 
; 162 1That is, 64 metric miles. In Science the mile of 
380 1600 metres, the furlong of 200 metres, the chain of 
re 1 9200 20 metres, and the perch or pole of 5 metres, should 
pane? ‘| 19°8 always be used instead of the so-called “imperial” 
97°5 measures of the same names. Here the old or imperial 
pe 7 measures are to the new or metric measures in the ratio 
45 of 100-582 to 100, which is the same as the ratio of 
Se 60 | 172-8 to 171-8, between which last numbers the dif- 
Neptune, } 35 ; 4 ference is\ 1. 
