WHOLE VOL. NOTES. NORTH rACIFlC IO5 



All values have been reduced to a height of 5.05 ni. I^y apply- 

 ing the following corrections : 



1903 to 1906 July 10 —0.13 mm. 



1906 July II to 1920 August 17 +0.05 mm. 



1920 August 18 to 1921 +0.25 mm. 



Iiistrmnciits: 



1903 to 191 1 April. Tonnelot barometer, index error cor- 

 rection applied —0.30 mm. 



19TT May to 1912 April. Fortin barometer, index error cor- 

 rection applied —0.81 mm. 



1912 May to 1922. Tonnelot barometer, index error correc- 

 tion applied — 0.30 mm. 

 Hours: The values are the means of observations at 2'', O'', 10'', 



14^^, i8'S 22J\ 

 Notes: All values have been corrected to normal gravity (Lat. 

 45°) by applying a correction of —1.58 mm. 

 Temperature. 



Site and Instruments: H. J. Green thermometers were in use 

 throughout the period. 



1903 to 1908 October. Thermometers exposed in an Ameri- 

 can type shelter, at a height t)f 3 m. above the 

 ground. 



1908 November to 1920 August 17. Exposed in a shelter 

 of tropical type with single screen and double roof 

 (the lower made of wood and the upper made of 

 nipa). Height of the thermometers above the 

 ground 1.35 m. 



1920 August 18 to 1 92 1. Similar exposure to the W. of the 

 former site about 200 m. distant. 



1922. Similar exposure to N. of preceding site about 500 m. 

 distant. 

 Precipitation. 



Site and Instrument : A U. S. standard rain gage was in use 

 throughout the period, at a height of 1.12 m. above 

 the ground. 



Authority. I^OILO 



Weather Bureau, Department of Agriculture and Natural Re- 

 sources, Manila, I'hilippine Islands. 

 Pres.sure. 



Site: The height of the barometer above Mean Sea Level was: 



1903 to 1912, May 27 Coo m. 



1912 May 28 to 1922 6.50 m. 



