3 04 POPULAR SCIENCE MONTHLY. 



for this special comparison by Professor Brown, of the United States 

 Naval Observatory; C. G. Abbot, aid acting in immediate charge, as- 

 signed with C. E. Mendenhall to the bolometer; T. W. Smillie, having 

 general direction of the photographic work, made exposures at the 135- 

 foot telescope; F. E. Fowle, Jr., assigned to the 38-foot telescope; 

 Father Searle, directing the assembled telescopes for the outer coronal 

 region, and for intra-mercurial planets, assisted by P. A. Draper and 

 C. W. B. Smith, exposed two cameras of 3-inch aperture and 11 feet 

 focus, and two of 4^-inch aperture and 3^ feet focus, all four of these 

 telescopes being mounted on a single polar axis driven by an excellent 

 clock; De Lancey Gill, assisting Mr. Smillie, removed the flash spectrum 

 objective prism at second contact, and made a single long exposure with 

 a 6-inch photographic lens of 7 -J feet focus equatorially mounted: 

 Assistant G. K. Putnam, who, by the kindness of the superintendent 

 of the United States Coast Survey, was detailed for latitude,* longitudet 

 and time observations, also observed contacts, directed the striking of 

 signals by Mr. Little, and rendered other valuable services. Mr. Put- 

 nam was assisted in recording contacts by Mr. Hoxie. R. C. Child, 

 observing with a 6-inch telescope of 7-| feet focus, made sketches with 

 special reference to inner coronal detail, and was in addition charged 

 with all electrical circuits for chronograph and automatic photographic 

 apparatus. Father Woodman, with 3^-inch telescope, observed contacts 

 and made sketches. 



The first detachment, consisting of Messrs. Abbot, Fowle, Kramer 

 (instrument maker) and Smith (carpenter), reached Wadesboro May 

 4th, and were soon joined by Messrs. Draper and Putnam. The latter 

 returned to Washington after a short but satisfactory latitude and 

 longitude campaign, reaching Wadesboro again just before the eclipse. 

 Other members of the party reached camp on and after the middle of 

 the month. The first comers found a very satisfactory shed already 

 erected and piers begun. Not a day passed from the time of the arrival 

 of the apparatus, May 7th, to the day before the eclipse, that was not 

 fully occupied in perfecting the arrangements. 



The most striking portion of the installation was the line beginning 

 at the northwest pier, with its equatorial and ccelostat, continued from 

 thence south of east by the two great diverging tubes of the 135-foot 

 telescope and spectroscope. These tubes were covered with white can- 

 vas, presenting the appearance of two immensely prolonged 'A' tents, 

 ending beyond the photographic house, where the 38-foot telescope tube 

 pointed east and upward at an angle of 42° with the horizon. When 

 the equatorial, with its large special conical tube camera, with all this 

 long-branching extent of white canvas ending in the uplifted tube of 



* 34°, 57' , 52" N. 1 5h., 20m., 17.8s. W. 



