78 SURVEY OF MASSACHUSETTS. 
The great eclipse of the sun, of May 15th, 1836, was observed by me in Providence. 
By combining my observations with those made at Greenwich, I deduced the longitude 
of Providence, 4" 45" 42.05, and the Longitude of the State House, by the observations 
made at Dorchester, 4" 44m 19°76. Hence, by this eclipse, longitude of Providence, 
4. 1™ 22°,29, 
By 32 chronometers compared with the State House, = - - “ + 1 99.57 
8 be “New Bedford, - - - 23.19 
By the beginning and end of eclipse of the sun, May 15th, 1836, - 22 .29 
Mean of 40 chronometers and the eclipse, - - - +1 22.60 
Or, from Greenwich, - - - - - - - 445 39.20 
Salem, (East India Marine Hall.) For the Latitude. 
The following observations were made in the yard of the Lafayette Hotel, at a point 
0’.69 north of the Hall: that quantity must, therefore, be constantly subtracted, to reduce 
the observations to the Hall. 
1833, April, 5 altitudes of © gave - - - “ - - = 42° 81' 187.2 
66 8 66 66 OG re = Pe = ~ « 22 .6 
1834, April, 23 - a Urse Minoris gave - - * - “ 21 .8 
e 13 r “ig ids ae : . * : 20 .6 
eee o TR ms . . : f “ 17 .4 
se 14 y o Urse Minoris ‘“ - - - - « 15 .8 
66 14 Lg a te ” - - - - QL iL 
6 10 6 « Urse Minoris ‘“ - - - ~ - 20 .4 
6 11 we a 1 6 - - - - - 19 .1 
66 13 66 66 66 Pm Be pe r a 1 8 
1835, Oct. 10 si « Urse Minoris ‘ - ~ - - - L7..8, 
1836, July, 10 “ “ “ “6 - - - “ 17 .4 
“6 10 “ « Aquile “ - - - « - 20 .2 
Oct. 10 a # Urse Minoris “ « . “ - - 16 .9 
64 altitudes of © and Southern Stars, - - - - 20.48 
90 “ Northern, - - - - 19 .06 
Mean of 154 observations, latitude of Hotel, place of observation, - 19 .64 
Reduction to front of Hall, - - - - - ~— 0 ,69 
Mean of 154 observations, latitude of Hall, north front, - «~ 42°.31/ 187.9 
Salem, (Hast India Marine Hall.) For the Longitude. 
The following observations were made in the yard of the Lafayette Hotel, at a point 
0°.23 west of the Hall. 
1833, April, By 2 chronometers east of State House, - - ° - - 405.85 
‘6 2 66 ‘c 66 ‘6 . < « . 40 .56 
1834, $6 2 66 66 66 66 . o « « « 40 53 
66 ) 66 6 66 66 se fe - ss 39 80 
‘6 2 66 e wh ha - . * vy - 40 14 
Sept. 9 66 66 66 66 ‘ é a - 40 .80 
1835, Aug. 4 es e a ¢ : ’ 3 41.18 
Oct. 4 6s 6“ ‘6 6 pi - - - 39 .87 
66 4 66 66 66 66 #5. ° - - - 40 .69 
1836, July, 3 Je “ ite “ ~ - - 40 .87 
. 3 " ig Bee : : : : 40.01 
