ASTRONOMICAL OBSERVATORIES. 



chronometers, by Hutton, of London, one sidereal and 

 the other solar. The instruments all belong to the Coast 

 Survey, except the equatorial telescope. 



Observations were commenced by Professor Gibbes in 

 April, 1848, on moon culminations and occupations for 

 the use of the Coast Survey ^ and have been continued 

 to the present time. In February, 1850, this observatory 

 was connected by the telegraph wires with the obser- 

 vatory at Seaton Station, "Washington City, for difference 

 of longitude by the electro-chronographic method. In 

 March, 1851, it was connected in a similar manner with 

 a temporary observatory in Savannah, Georgia, and a 

 successful series of observations made for the difference 

 of longitude of the two stations. During the winter and 

 spring of 1852, another telegraph comparison for longi- 

 tude was made between Charleston and Washington, 

 which proved entirely successful. 



DARTMOUTH COLLEGE OBSERVATORY. 



The founding of Dartmouth College observatory was 

 due chiefly to the munificence of the late George C. 

 Shattuck, M.D., LL.D., of Boston, who furnished the 

 means for the erection of the building, the purchase of 

 the meridian circle, the comet-seeker, a chronometer, etc., 

 together with a large part of the books belonging to the 

 library. The site of the building is near the summit of 

 an isolated hill, about 50 rods north-east of the college 

 green, and .elevated 70 feet above it, commanding a 

 charming prospect up and down the Valley of the Connec- 



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