Lewis Morris Rutherfurd's first photographic experiments were 

 inspired by those at Harvard (q.v.). Late in 1857, therefore, he applied 

 to the Clarks for a new clock drive for his equatorial. This new clock — 

 which had a remontoir escapement similar to that of Bond's spring 

 governor — was of the "highest merit." Several years later, using an 1 1 *4- 

 inch lens which he had focused for the photographic rays, supported on 

 the Fitz equatorial mount and driven by the Clark clock, Rutherfurd, 

 in New York City, was able to photograph ninth-magnitude stars. 



In i860 Rutherfurd prepared a telescope and camera for the U.S. 

 Coast Survey Expedition to observe the solar eclipse from Labrador. The 

 two components of the \ l /\ -inch objective, which were made by the 

 Clarks, were separated so that the best visual and photographic foci 

 were united. 204 



In 1 94 1 the University of Santa Clara, in California, bought a 

 16-inch equatorial refracting telescope from the Pacific Electric Railway 

 Company. This instrument, which is still in use, had been made by the 

 Clarks in 1882 for Lewis Swift and had been taken by Swift to the Lowe 

 Observatory ( qq.v. ) . 205 



Frank Evans Seagrave acquired in 1875 an 8-inch equatorial re- 

 fractor made and mounted by the Clarks. For greater rigidity the tele- 

 scope tube was patterned after the tubes often used for transit instru- 

 ments : it consisted of two cones of riveted sheet steel. The position circles 

 were twice graduated : the fine scale was read by verniers and a larger 

 scale was painted on the edges of the circles for convenience in locating 

 celestial objects. Among the various accessories of the telescope was a 

 Clark position micrometer. 206 The telescope was housed in Seagrave's 

 private observatory located first in Providence, Rhode Island, and later 

 in the suburb of North Scituate. 207 The Seagrave observatory is now 

 operated under the aegis of Skyscrapers, Inc. 



204 Lewis M. Rutherfurd, "Astronomical Photography," American Journal of 

 Science, vol. 39 (1865), pp. 304-309. 



205 Proc, Astronomical Society of the Pacific, vol. 53 (1941), p. 349. 



206 Edward S. Holden, "Astronomy," Annual Record of Science and Industry (1878), 

 PP- 37-3 8 - 



207 Charles H. Smiley, "Frank Evans Seagrave," Popular Astronomy, vol. 42 (1934), 

 pp. 1-2. 



88 



