PROCEEDINGS. 
415 
possesses about 800 chronometers, and for the rating of these 
elaborate provision is made at Washington, and further provision 
at Mare Island Navy Yard, Cal., and at Cavite. The tests used 
were described, diagrams were exhibited to show the actual be¬ 
havior of chronometers under service conditions, and the details 
of the time service were explained. [Published in Publications 
of the U. S. Naval Observatory, vol. iv, Appendix iv, and in 
Eeport of Eighth International Geographic Congress, p. 785.] 
Eemarks were made by Messrs. Bigelow, Wead, and Green. 
Mr. J. E. Hayford then described the novel principles applied 
and the results obtained in Eecent rapid primary triangulation, 
covering 6° on the 98th meridian in 1902, illustrating his re¬ 
marks by lantern-views. The work was done at more than twice 
the usual rate, and at half the usual cost per station, without 
sacrificing accuracy. [Not published.] 
570th Meeting. May 23, 1903. 
President Gore in the chair. 
Thirty-five persons^ present. 
The meeting was devoted to Memorial Addresses on Deceased 
Members by: 
Mr. A. F. A. King on S. C. Busey. 
Mr. B. E. Green on Edward Clark. 
Mr. F. H. Bigelow on William Harkness. 
Mr. H. L. Marindin (by invitation) on Henry Mitchell. 
Mr. S. M. Burnett on Charles Nordhoff. 
Mr. G. W. Littlehales on W. T. Sampson. 
[Published in part in this volume, pp. 277-311.] 
571st Meeting. October 10, 1903. 
President Gore in the chair. 
Nineteen persons present. 
Mr. G. W. Littlehales read a paper on A new method of 
finding the locus of geographical position and the compass-error. 
This depends on the use of diagrams drawn on a scale so large 
