72 Mr. Paine on the Latitude of Boston. 
not produce any change in the result, and that the mean of the 
first 50 differs only two thirds of a second from the mean of all. 
The difference between the latitude of the State House and 
of my residence was determined by the latest and most accurate 
map of the city, but may be in a very slight degree erroneous, 
a point which will soon be ascertained by a trigonometrical 
admeasurement. 
Latitude of the new State House in the city of Boston as de- 
termined by nearly six hundred observations, made in the 
house at the southeasterly corner of Essex and Short streets, 
supposed to be 2310 feet South 29° 41’ East, of the State 
House. 
Instruments. 
Ramsden’s Sextant No. 1375, of nine inches’ radius. 
6 “ “¢ 1403, of six inches’ radius. 
Mean of 194 Observations by No. 1403, in October, No- 
vember, and December, 1828, and in Jan- 
uary, 1829. (Greatest lat. 42° 20’ 60-4. 
Least 42° 20’ 14-6) - - - - 42° 20! 37-97 
Mean of 390 Observations by No. 1375, in March, April, 
September, October, and November, 1827, 
and in January, February, March, and 
April, 1829, (Greatest lat. 42° 20’ 59-7. 
Least 42° 20’ 16/1) - - - - 38:08 
Mean of 584 Observations by both instruments - - 38-04 
Reduction to the State House - - - - 19-8 
Latitude of the State House - = = = - 42° 20! 57-8 
