REPORTS OF AMERICAN OBSERVATORIES. 5G7 



VI. Additional information: * 



The "additional information" comprises the whole of what T am able to 

 report concerning the "Lick Astronomical Observatory." 



During this summer temporary accommodations have been erected at 

 Mount Hamilton (observatory site), Santa Clara County, California, in- 

 cluding a snug little house with revolving dome and masonry pier, upon 

 which Prof. S. W. Burnham has a 0-inch equatorial mounted and at 

 work with clock, micrometer, etc. 



Professor BURNHAM is making various experiments to test the capa- 

 bilities of the position as a place of observation, and his report will no 

 doubt be received with eager interest. 



The preliminary steps above indicated comprise the work of practical 

 advancement so far as accomplished during the past year, being, it is 

 hoped, a commencement of more effective progress. 



Location of observatory : (City) South Bethlehem ; (County) North- 

 ampton; (State) Pennsylvania. 

 Name of observatory : Sayre Observatory. 



Longitude from Washington, 0" 1 40M9 east. 

 Latitude, 40° 36' 23".89 ± .036. 

 Authority for latitude and longitude: For longitude, Appendix I, 

 Washington Observations 1875. Latitude, Ast. Nach., No. 2200. 



I. Personnel: 

 Director, C. L. Doolittle. 



II. Instruments: 



(a) Meridian circles : None. 



(c) Equatorial instruments : Makers, Clark & Sons; aperture of ob- 

 jective, inches; magnifying powers of eyepieces, 12 to 225. 



(g) Clocks : Sidereal ; makers, Bond & Son. 



(■/) Miscellaneous: A portable transit instrument by Stackpole, a 

 zenith telescope by Blunt, and a prismatic sextant by Pistor & 

 Martin. 



III. Observations during the past year: 



[a) The field instruments are designed for the use of students iu astron- 

 omy of the university, and have been employed to good purpose by them 



(c) [c') With the equatorial a series of measurements of Jupiter's sat. 

 ellites has been made ; also a considerable number of eclipses and other 

 phenomena of those satellites. A few observations of Brorson's comet 

 were also made. 



IV. Work proposed for the COMING year (1879-80): 



The observations of Jupiter will be continued, and such attention 

 given to comets, eclipses, or other special appearances as circumstances 

 will permit. 



