The Central Missouri Amateur Astronomers, in Moberly, Mis- 

 souri, are the present owners of Robert Green's (q.v. ) 4-inch Clark 

 refractor. 



In 1883 Anthony Chabot donated a well-equipped astronomical 

 observatory to the Board of Education of Oakland, California. From 

 Fauth & Co. Chabot obtained a transit instrument and a chronograph. 

 From the Clarks he bought an equatorial refracting telescope of 8 inches 

 clear aperture. This telescope had large setting circles graduated on silver 

 and read by verniers and microscopes, the hour circle to 1 second of time, 

 and the declination circle to 5 seconds of arc. The battery of eyepieces 

 ranged from 40 to 800 power; the Clarks seldom supplied eyepieces which 

 magnified more than 100 times for each inch of aperture. Among the 

 accessories of the Chabot telescope were a position micrometer and a 

 spectroscope provided with both a prism and a plane diffraction grating. 36 

 Although moved several times to avoid the glare of city lights, this tele- 

 scope is still in use. 



The original University of Chicago provided the first home for the 

 1 8^ -inch Dearborn telescope (q.v.), while the present University of 

 Chicago encompasses the Yerkes Observatory (q.v.). 



The 1 1 -inch Cincinnati equatorial, which O. M. Mitchel had pur- 

 chased in Munich 35 years earlier, was worked over by the Clarks in 

 1876. They refigured, and improved, the objective; replaced the driving 

 clock; added wooden arcs, visible from the ocular, to facilitate finding a 

 celestial object; supplied an achromatic and a diagonal eyepiece; and 

 they "neatly painted" the whole telescope and stand. 37 About the same 

 time, the University of Cincinnati Observatory acquired from the Clarks 

 an equatorially mounted comet seeker of 4 inches aperture. 38 Their 1889 

 meridian circle incorporated a 5/2 -inch Clark objective and a Fauth 

 mount. 39 



The Cincinnati Astronomical Society inherited an 8}4-inch 

 aperture equatorial refractor from Andrew Henkel (q.v.). Except for an 



36 Annual Report of the Public Schools of the City of Oakland, for the Tear Ending June 30, 

 i8 9 i, pp. 31-33. 



37 Annual Report of the Directors of the University of Cincinnati (1877), P- 12> 



38 U.S. Naval Observatory Reports of the Total Solar Eclipses of July 29, 1878, and 

 January it, 1880 (Washington, D.C., 1880), p. 235. 



39 Appletorfs Annual Cyclopaedia, vol. 14 (1889), p. 42. 



47 



