REPORTS OF AMERICAN OBSERVATORIES. 549 



N. G. Adee's house at Zapato, and rising to an altitude of 6,120 feet 

 above said house, the approximate elevation of which above sea-level 

 is 8,009 feet, provided a valid title can be obtained by purchase or oth- 

 erwise to sections 13 and 14, township 28 north, of range 73 west, of the 

 sixth principal meridian, as yet unsurveyed and unoccupied public land 

 comprising this mountain, the most accessible of the higher peaks of the 

 Sierra Blanco. 



V". Additional information: 



April 25, 1870, I found Brorsen's comet in the vicinity of a star sup- 

 posed to be B. A. C. 1504, coming' within the same held of view of in- 

 strument (a), in which the comet was seen with a magnifying power of 

 .">(>. The comet was observed each following night until April 30, when 

 a star, supposed to be B. A. C. 1849, was within the same held of view 

 with the comet. It was looked for again all night of May 5, but could 

 not be found again. 



During a few hours in the nights of July 18 and August 10, on the 

 San Juan, below Pagosa Springs, Colorado, I saw many very brilliant 

 meteors. Monthly reports of sun-spots and other miscellaneous observa- 

 tions have been made to the Chief Signal Officer of the Army. 



Location of observatory : (City) Glasgow; (County) Howard; (State) 

 Missouri. 

 Name of observatory : Morrison Observatory. 



Longitude from Washington, l h 3"' 6 S .8 W. 

 Latitude, 39° 10' 16".75 K. 

 Authority for latitude and longitude: Longitude by time .signals from 

 the Naval < >bservatory on five successive days; latitude from a series of 

 observations on circumpolar stars made on meridian circle. 



I. Personnel: 

 Director, Carr W. Pritchett. 

 Assistant, C. W. Pritchett, Jr. 



II. Instruments: 



(a) Meridian circles: makers, Trougiiton & Simms, Loudon; diam- 

 eter of circles, 24 inches; divided too'; read by 8 microscopes to 1"; 

 aperture of objective, 6 inches; for observations of the Sun, aperture em- 

 ployed, 4 inches; magnifying power ordinarily employed, 200 diameters. 



(c) Equatorial instruments: Makers, Al van Clark&Sons; aperture 



of objective, ll'j inches; magnifying powers of eyepieces, 50 to 1,000. 

 (/) Chronographs: by Ai.vw CLARK Ov Sons, conical pendulum. 

 (()) Clocks: Sidereal, maker, CHARLES FRODSHAM, No. 1369. 



(/<) Chronometers: Sidereal, makers, T. S. & J.D. Negus, break circuit 

 No. 1590. 



(i) Miscellaneous : Small altazimuth, CASELLA, London; barometer ami 

 thermometer. 



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