114 smithsonian miscellaneous collections vol. 79 



Rainfall. 



Authority and Sites: Same as for the pressure. On account of 

 the removal of the gage from the Observatorio do Castello 

 to the Torre Meteorologica in 1922, the values from July 

 1922 to April 1923 are only one half as large as the mean 

 of 9 surrounding stations. 



CHILE 

 Authority. 



The data given were copied from the publications of the Chilean 

 Meteorological Service l)y Robert C. Mossman, except for 

 Runta Arenas, which were copied from " El Clima de Punta 

 Arenas " by Jose Re. S. J., and from subsequent publications 

 of the " Observatorio Meteorologico Jose Fagnano." 

 Exposure of Instruments. 



For most of the stations the exjxisures are not described. 



At Punta Arenas the instruments are exposed in a tower con- 

 nected with the church. In 1908-1909 a new tower was con- 

 structed especially for the meteorological observatory where 

 it continues up to the ])resent time. Hourly readings of the 

 pressure are taken from a Richard barograph checked by 

 readings of a Fortin barometer at f\ 14^^ and 2i'\ 



The thermometers and a Richard thermograph are exposed in a 

 window shelter. 



The rain gage is exposed on the roof but is well protected from 

 the wind. 

 Hours of Observation. 



For Evangelistas the pressure corrections to bring to mean of 

 24 hours are very small and apply only to a few months of 

 the year as follows : 



7''-i4''-2i^\ February — o.i, March — o.i. 



7'' 26'", io'\ and i6'\ January -|-o.i, March to June +0.1, No- 

 vember -l-o.i. 



8h_i4ii-2ih, same as 7''-i4''-2i'\ 



At Pimta Galera the hours of observation for pressure were 

 8'^- 14^-21'' to July 1906, then 7'' 26'". (Greenwich noon) 

 10'' and 16'' to December 19 10 and 7''-i4''-2i'' since. The 

 corrections applied in tenths of millimeters were for these 

 series (to reduce to mean of 24 hours) as follows deduced 

 from hoiu"ly data at N'aldivia: 



Jan. Feb. Mar. \pr. May .June .luly \ug. Sept. Oct. Nov. Dec. 



