22 ANNUAL RECORD OF SCIENCE AND INDUSTRY. 



bright line "1474" in the green portion of the spectrum, on 

 the north, east, south, and west limbs of the sun. The exist- 

 ence of this line was demonstrated to a distance from the 

 sun's limb equal to about four tenths of the solar diameter, 

 and the limit was about the same in the four different direc- 

 tions. 



Professor Boss determined the latitude and longitude of 

 the station, observed contacts, and during totality devoted 

 himself to the study of the details of the structure of the 

 corona. 



Professor Pritchett observed contacts, and during totality 

 devoted a portion of his time to an unsuccessful search for 

 Vulcan, and the remainder to a study of the solar promi- 

 nences, and one or two portions of the corona. 



Assistant Paul observed contacts, and during totality 

 sketched the outline of the corona projected on a finely 

 ground glass plate in the focus of a telescope of 48.5-inch 

 focus, with an objective of 3.5 inches. 



Mr. H. S. Pritchett observed contacts, and during totality 

 pointed the telescope which carried Professor Eastman's 

 spectroscope. 



The party under Professor Holclen was stationed at Cen- 

 tral City, Col. The work done was as follows : 



Professor Holden made an unsuccessful search for Vulcan, 

 and a sketch of the corona. 



Dr. C. S. Hastings made six independent determinations 

 of the plane of polarization of the coronal light. 



Professor E. W. Bass made a minute examination of one 

 half of the corona, and observed the four contacts. 



Lieutenant S. W. Very, U.S.N. , determined the latitude and 

 longitude of Central City, and assisted Dr. Hastings during 

 totality by pointing his telescope. 



Mr. J. E. Keeler made a crayon drawing of the corona. 



Mr. C. IT. Rockwell made a sketch of the corona, and noted 

 time for Professor Bass. 



Mr. Peers, of Central City, took a photograph of the co- 

 rona. This photograph is noteworthy, as it gives more of 

 the outer corona than any other, and is a valuable supple- 

 ment to the photographs of Professors Hall and Harkness, 

 which give so much detail in the inner corona. (The outer 

 corona is shown over 60' on each side of the sun.) 



