550 REPORTS OF AMERICAN OBSERVATORIES. 



III. Observations during the past year: 



(From September 1, 1878, to September 1, 1879.) 



(a) Meridian circle lias only been used for time observations. 



1. Third series of observations on satellites of Saturn. 



2. Observations of satellites of Jupiter. 



3. Measures of position, angle, and distance of double and multiple 

 stars. 



4. In progress, an extensive series of observations on the Eed Spot on 

 Jupiter, first seeu July 9, 1878. Transit of center, for redetermination 

 of axial rotation. 



5. A few occupations of stars by the Moon. 



IV. Work proposed for the coming year: (1880.) 



(a) It is expected that the meridian circle will be put to systematic 

 use during the ensuing year. 



(e) The observations on the equatorial will be divided between the 

 fixed stars and planets as the relative importance of the work, for the 

 time being, may demand. 



VI. Additional information: 

 We have no fund for defraying expenses of publications. A few 

 papers have been published in the "AstronoinischelSachrichten" and the 

 " Observatory," London. There exists here quite a large number of ob- 

 servations which might be of use if published. 



Location of observatory : (City) Hanover; (County) Grafton; (State) 

 New Hampshire. 

 Name of observatory : Shattuck Observatory. 



Longitude from Washington, 19 m 3 8 .56 east. 

 Latitude, 43° 42' 15".2 north. 

 Authority for latitude and longitude: Prof. C. A. Young. 



I. Personnel: 



Director, Charles F. Emerson. 



Assistants: 1. Charles D. Lamb, \ Boom in the observatory, and 



> have charge of i lie nieterologi- 



2. David P. Peed, ) cal observations. 



3. Georoe O. Mitchell. 



II. Instruments: 



(a) Meridian circles: makers, Troughton & Simms; diameter of 

 circle. ."»() inches; divided to .V; read by reading microscopes to 1', and 

 micrometers to single seconds ; aperture of objective, 4 inches; mag- 

 nifying power ordinarily employed, 120 diameters. 



(c) 'Equatorial instruments; .Makers, Alvan Clark & Sons ; aperture 

 of objective, 9.25 inches; magnifying powers of eyepieces, 100 to 1,200, 

 20 in number. 



