William Tyler Olcott, the author of several popular books on 

 astronomy, used a 4-inch aperture Clark refractor made in 1893. A 

 wooden tripod supported the brass with nickel tube and a hand-driven 

 worm wheel. Olcott later gave the telescope to Phoebe Haas (q.v.), who 

 then gave it to the American Association of Variable Star Observers 

 (q.v.), which in turn loans it to its members. The Olcott instrument is 

 now being used by Walter Scott Houston. 



A 6-inch Clark equatorial furnished with all necessary accessories — 

 i.e., driving clock, finely divided circles, filar micrometer, etc., — was part 

 of the equipment of the observatory given to the University of the 

 Pacific by Charles Goodall (q.v.) and David Jacks in 1885. 186 



Rowley Patterson of Dansville, New York, had a 5-inch aperture 

 Clark refractor dated 1881. 187 



In 1959 Leslie C. Peltier, an amateur astronomer in Delphos, Ohio, 

 acquired the 12-inch equatorial which the Clarks had built for Wesleyan 

 University (q.v.) in 1868, and which had been in use at Miami Univer- 

 sity (q.v.). 188 



In 1912 the Allegheny Observatory (q.v.), founded by a group of 

 Pittsburgh citizens, was incorporated into the University of Pitts- 

 burgh. 



The National Observatory of Prague, presently affiliated with the 

 Charles University in the suburb of Ondrejov, 1S9 was planned and built, 

 toward the end of the 1 9th century, by Josef and Jan Fric. These Bohe- 

 mian "workmen-mechanicians" purchased their 8-inch refractor from 

 the Clarks. 190 



In 1877 tne Clarks helped equip the newly erected John C. Green Ob- 

 servatory for student instruction at Princeton Unfversity. The unusual 

 and highly successful telescope was undoubtedly designed in collabora- 

 tion with Charles A. Young, who had just been appointed to the Prince- 



186 University of the Pacific Catalogue (1 901 -1902), p. 17. 



167 William H. Knight, "Some Telescopes in the United States," op. cit., pp. 



394-395- 



188 Leslie C. Peltier, Starlight Nights (New York, 1965), p. 220. 



189 P. Stroobant, Les observatoires astronomiques et les astronomes (Tournai/Paris, 

 1931), p. 187. 



190 Astronomie v Ceskosloiensku od dob Nejstarsich do Dnoska (Prague, 1952), p. 210. 

 See also P. Stroobant (Brussels, 1907), p. 169. 



84 



