TABLE P.-Statement of mails received from and dispatched to the United States by the Manila post-office during the fiscal year ending June 30, 1901.

TABLE Q.-Statement of mails received from and dispatched to Honolulu, Guam, and United States ships and troops in foreign ports by the Manila post-office during the fiscal year ending June 30, 1901.

TABLE R.-Statement of mails received from and dispatched to foreign countries by the Manila post-office during the fiscal year ending June 30, 1901.

APPENDIX P.

REPORT OF THE OFFICER IN CHARGE OF THE MANILA SUBOFFICE OF THE UNITED STATES COAST AND GEODETIC SURVEY TO THE SECRETARY OF COMMERCE AND POLICE, FOR THE PERIOD FROM JANUARY 1, 1901, TO OCTOBER 1, 1901.

TREASURY DEPARTMENT,

U. S. COAST AND GEODETIC SURVEY SUBOFFICE,

Manila, P. I., October 1, 1901.

The SECRETARY OF COMMERCE OF THE PHILIPPINE ISLANDS.

SIR: In compliance with your request, I have the honor to submit the following report of the work done by the Coast and Geodetic Survey in the Philippine Islands from the beginning of this calendar year to the present date. The field work has consisted in local and harbor surveys and the determination of geographic positions.

Harbor surveys have been made at Sual, Bolinao, San Fernando, Santo Tomas, Darigayos, Legaspi, Port Sula, and Mariveles, on the island of Luzon, and at Tacloban, island of Leyte, and reconnoissances have been made at Aparri and Balayan, Luzon. These surveys have in general been based on triangulation, and have included both a topographical plane-table survey of the shore line and immediate vicinity, and a hydrographic survey of the water area. Triangulation and topographic work have also been done in the vicinity of Manila from Malabon to beyond Cavite. These surveys have been so marked on the ground and referred to prominent objects that the work may be recovered and connected with future operations. Harbor surveying work is now in progress on the east coast of Luzon.

Tidal observations. For immediate use in the hydrographic work and to furnish the data for future predictions of the tides, tidal observations have been made at 11 points, being all of the places where local surveys have been executed. Automatic self-registering tide gauges have been set up at four of these places, and at Manila the record is now continuous for two-thirds of the year. At each place the tide gauge has been connected with bench marks on the shore for future reference.

Geographic positions.-In pursuance of a plan to determine base positions at important places at suitable intervals along the coasts, astronomical observations for latitude and longitude have been made at the following points: Batangas, Balayan, Subig, Iba, Santa Cruz, Sual, San Fernando, Candon, Vigan, Currimao, Cape Bojeador, and Aparri, on the island of Luzon, and at Iloilo, Cebu, Tacloban, and Ormoc in the central islands, and latitude observations have been made at Manila. The longitude determinations, with one exception, have been made by the telegraphic method, for which purpose the lines and cables of the Signal Corps and the cables of the Eastern Extension Telegraph Company have been courteously placed at the disposal of the Survey. In all, the longitudes of 16 points and the