246 
"XXXV. 
OBSERVATIONS ae Se ECLIPSE OF ae SUN OF SEPT. 47, 
MADE AT PORTLA 
BY REY. ICHABOD N HOGS 
Extracted from a letter to Nathaniel Bowditch. 
es GDS 
FOR the purpose of observing this eclipse, I spoke to some gen- 
tlemen to take a station on Observatory Hill, and procure time-keep- | 
ers, glasses, &c. I stationed myself on a hill one mile west. I used 
a new watch, made by Roskill. They had one of the same construc- 
tion, and another independently regulated. I had an achromatic tel- 
escope of about 50, and an excellent day and night glass. They had 
an admirable achromatic of about 100, and two day and night glasses. 
a L. Babbit assisted me in the observations, and we used the same 
Ba a The following are the results. 
Beginning. 
App. a 
By the telescope on Deen valry. bs 0 573 a 
First day and night eae 057 35 Mean 0 57 82 
Second Do. - es 0 57 31 
My rte sath the ee 0 57 
Mr. Babbit’ 0 57 34 $ Mem 0 57 94 
End. 
By the telescope on werghiat: ea 3 58 46 
First day and night glass Sos wer alas 
3 58 48°7 
Second Do. — - . - 358464 
My observation with ope — 
Mr. Babbit’s PP 3 ba 59 ¢ Mean 3 59.00 
By an altitude of the sun, taken at the moment of j immersion, the 
time was found to be Oh. 57’ 30” apparent. 
The watches were regulated by single and likewise by double al- 
titudes of the sun. I began on the 10th and ended the 20th Sept. 
The latitude of Portland is estimated at 43° 39’ N. 
