Manila: Bureau of Printing, 1909. 1st separate edition. Accompanied by a mss note, "With the author's compliments" calling card. 263 - 287, , 288 - 296 pp. Partially unopened. Illustrated with intratextual graphs & 3 full-page charts. 10-1/2" x 7-1/2". Original publisher's printed drab green paper wrappers. Now housed in an archival mylar sleeve. Age-toning. Stamped prior owner name to top of front wrapper. Very Good. Item #46000
Reprinted from The Philippine Journal of Science, Vol IV, No. 4, July 1909.