ASTRONOMY. 55 



establishment, and we cannot pay him enough to enable him to do 

 more than that. 



Mr. Burnham is observing double stars with the Equatorial. 



5th. Publications. Our only publication of work done is the pam- 

 phlet above referred to. 



Addendum. The great Telescope could not be used previous to 

 three years ago, the original dome being a mechanical blunder. This 

 fact seems not to be generally known ; and more than a little unjust 

 remark has been made by parties who seemed not to be aware of it. 



Clinton, N. Y. : Litchfield Observatory of Hamilton College. 



Dr. C. II. F. Peters, Director. 



The observatory, the gift of Mr. Litchfield, consists of a central 

 building;, with wings on the east and west sides. The central build- 

 ing is twenty-seven feet square and two stories high, surmounted 

 by a revolving tower twenty feet in diameter. The Equatorial in 

 the tower, constructed by Spencer & Eaton, has an object-glass of 

 13.5 inches in diameter and focal length of nearly 1G feet; it is 

 provided with six positive and six negative Eye-pieces, with a Ring 

 and a Filar Micrometer. For solar observations it has a Prismatic 

 Polarizing Eye-jnece of original construction by Mr. Robert B. Tolles, 

 of Boston, Mass. The declination circle of twenty-four inches, by 

 means of four verniers, reads to four seconds of arc ; the hour circle 

 of fourteen inches, by means of two verniers, reads to two seconds of 

 time. The instrument is mounted upon a granite shaft, nine feet in 

 height, resting upon a pier of solid masonry. A Clock-icork, with 

 Bond's isodynamic escapement and spring governor, causes the Tele- 

 scope to follow the daily motions of the stars, by acting upon long 

 arms attached to the equatorial axis. The wings are each eighteen 

 feet square. The east room is used as an office for the director. In 

 the west room is mounted a Portable Transit Instrument, of 2^ 

 inches aperture, the gift of Hon. Anson S. Miller, LL.D., of Rock- 

 ford, 111., and constructed by W. Wurdeman, of Washington, D. C. 

 It has a cast-iron folding-stand invented by the maker. 



Near the Transit is an Astronomical Clock, constructed by Will- 

 iam Bond & Son, Boston, and presented by the late Hon. William 

 Curtis Notes, of New York. It is regulated for mean time, and pro- 

 vided with the Break-circuit for telegrajmic operations. By the side 

 of the clock is a Chronograjyh of Bond's most recent construction, 

 and regulated by the spring governor, presented by Michael Moore, 

 Esq., of Trenton Falls. These instruments have been connected by 

 a telegraphic wire with the nearest station; and the longitude of the 

 observatory has thus been accurately determined by exchanging star- 

 signals with the Harvard College Observatory, at Cambridge, Mass. 



