yee eG te 
G. W. Dean—Longitud: Determination across the Continent. 447 
Longitude Determinations across the Continent, January and 
February, 1869. (Final results.) 
Personal Equations 
Dea = S- 
Goodfell ee =e =+0 i t From Gou'd's Report of May, 1867, p. 75. 
NS ee From observations made at San Francisco 
ean ee +0180 April, 1869. : 
on. Observer. Dean’s Standard. 
Cambridge, Mosman, +0*110 ) To be applied to the — 
Omaha, Goodfellow, —0°020 ae cae of the 
Salt Lake, an, 00 tiv + 
’ San Francisco, Davidson, +0180 them to > Dene! 8 pi 
To correct the differences of longitude for personal equation, 
we have :— 
Cambridge Time — Omaha Time = +0°130 
_ “ — Salt Lake Time = +0°110 
maha eo he _ = —0°020 
Cambridge “ W— San Francisco Time = —0-070 
Omaha * 33 “« = —0°200 
Salt Lake Cc — = “« = —0°180 
STATIONS. Difference of} Personal } Corrected differ- |Doubletran~- 
Long. (A). | equation. Pre of — mission time. 
.™. 8. 8. lh: 8. 
Cambridge to Omaha 139 15-159) +7130 [1 39 15- 289+ -008 3364 015 
ambridge to Salt Lake | 2 43 bes Oe 110 |243 4:3674-008| 5914-019 
to Salt Lake 1 3490 BLE “a0 1 349°061+4-008) -260+4-016 
Cambr’ge to S. Francisco! 3 25 7 260) 2 2m: 3 007) ‘8174-014 
Omaha to San Francisco | 1 45 52-094 — bi 1 45 51°8944-010! -483+-023 
Salt Lake to S. Francisco] 0 42 3-024. —-180 | 0 42 2°8444-008) “2424-016 
Diffe of 
ay STATIONS. : Longitude. Xi + Xs 
h. m. 8. #: A 
Cambridge to Omaha, 1 39 15-2894-008 | -3364-015 
Omaha to Salt Lake, e 3 49°061+°008 | 2604-016 _ 
Cambridge to Salt Lake (sum), Sper eeiaued 43 43504-011 | 5964-022 
NON i i ca ; 43 4367+4°008| 5914-019 
a 0174-014 | 005 +°029 
Cambridge to Omsha, 1 39 152894008 | 3364-015 
Omaha to Salt 1 3 49°0614°008 | -260+-016 
Sslt Lake to tee reiaead Ces 042 2:8444-008} -2424-016 
Cambridge to San Francisco (sum), eee eoue. 325 7:1944°014 | 8384-027 
(direct) os... 3.22 325 7:1904°007| -817+-014 
Difference ee -0044°016 | -021+4°030 
Omaha to Salt Lake, 1 339-061 4°008 | -260+-016 
Salt Lake to San Francisco, ’ 042 28444008 | -242+-016 
Omaha to San Francisco (sum), 1 45 519054011 | 5024-023 
a irect), 1 45 518944 °010 | 483 +023 
Ditters co | * O12 7015 9+-032 
wo, 2  Dileroneh 0. 
Cambridge to Omaha. 1 39 15-2894 -008 | -3364 015 
Omaha to San Francisco, --| 1 45 51°8944°010 | 4834023 
Cambridge to San Francisco (min --|3 25 7-1834°013 | ‘8194-027 
(direct), ........-|3 25 7-1904-007 | ‘8174-014 
Difference, 5 | 0024-030 
007 +015 
