50 Midler’s Review of Schubert's 
By means of this value the semi-major axis can be found for 
each measure of an arc. It results as follows: 
For the meridian of Kaliana in Long. 95° 20! 3272581'3 
“ és “ Dorpat “ 44° 28! 10” | 32726501 
“ “i “ Tarqui “c & 998° 44! 3272382°8 
Three radii and their included angles suffice for the determin- — 
ation of the ellipse. The writer finds for the semi-major axis — 
of the equatorial ellipse 3272671°5 toises 
and its direction ° 44! 
for the semi-minor axis of the equatorial ellipse 83272803-2 
and its direction 148° 44’ 
eee ew eee 
; io o0 90 = oo SPER 
Polar compression of the greatest meridian = gy3!;55 
ns if 7 smallest xe => gunlote 
and the separate arcs calculated with these values have the fol: 
lowing deviations : 
in toises, in are. 
Petr... 3 seeees iepiys pees + 12 0/077 
POUNSPUNDIN SS oss Sos oe ae — 105°6 6 *687 
BngMngs.t See ee SS. + 11°68 0 *736 
BraaGes oo eats ori — 25°45 1 ‘607 
Cape of Good Hope,.......... — 698 0 *442 
Prussitiy 352 Pepe vetoes es, s; + 23°28 1 ‘267 
Russia, . 15. Seer cseer case. — 20°47 1 -289 
Indias. 4% RK Re ee eke + 25°54 1 619 
greater deviations the writer — 
was measured with imperfect 
of the men who, at 
under the untold d 
ilized countries. 
ts 
o 
Fa 
oO 
pl 
joe 
S 
g 
i= 
m 
ES 
° 
4 
Bb 
= 
t f; q * ius 
: at the geodetic measures, i 
particular the longitudes, do not harmonize with astronomical 
observations, but no one has yet succeeded in discovering the 
cause of this disagreement. The ellipticity of the earth’s equa- 
tor, as discovered by the writer, will call forth new investi gations, 
# Dr. Maskelyne in his description of Mason and Dixon’s ba ; _ 
e (Phil, Trans., Loo- 
don, 1768) says they emplo vi rods o; fi ra eis tandard 
a measure at a fixed tenpeitere ke Hie we ited a : 
y Lt. Col. Graham, U.S. Top. Eng. See M +9 fel 
tion to the intersection of the boagdary linea bf toe ‘Sistas of Mi: een a 
vania and Delaware, Washington, 1850, oe 3 
