Vol. 2 includes "Report of Comet committee, 1909-1913, with index catalogue of all photographs of Halley's comet reported to the committee ... Photographs of Halley's comet taken at Diamond Head, Hawaiian Islands, by Ferdinand Ellerman. Notes on these photographs by E. E. Barnard" (p. [177]-227, xxviii pl.).

List of members in v. 1, 3.