WHOLE VOL. NOTES. SOUTH AMERICA 6l 



As the correction to reduce the hourly values of temperature (1895 

 to 1901) to ^(7 h +i4 h + 2i h + 2i h ) exceeded o°i in some months, the 

 following plus corrections were applied during the above years : 

 o°2 April, May, and July; o°i March, June, and August. 

 During the other six months, there is no correction. 



Authority for the following stations : Directoria de Meteorologia, 

 Instituto Central, Rio de Janeiro. 



FERNANDO DE NORONHA 

 Precipitation. 



This is a new station beginning with 191 1. 



The amount of the rainfall was determined from the means of 

 two readings made respectively on a Herve Mangon and 

 a Ville de Paris pluviometer, both situated at the same 

 height above sea level. The monthly values for April, May, 

 June, July, and August 1921 are missing on account of the 

 difficulty of keeping an observer on the island. The data 

 are given in part III. 



JUIZ DE FOR A 

 Precipitation. 



This is a new station beginning with 1910. The data are to be 

 found in part III. 



ONDINA 

 Pressure. 



A correction of —1.8 mm was applied to reduce the pressure 

 to gravity at Lat. 45 °. 

 Remarks. 



The data, include temperature and precipitation and are given in 

 part III. This is a new station beginning with 1912. 



PORANGABA 

 Data from this station are to be used as a continuation of the 

 Fortaleza series published in volume 79, Smithsonian Misc. Coll. 



Comparison with Fortaleza, 



There are considerable differences between the values given in 

 this publication for the years 1916 to 1920 and those given 

 in volume 79, page 1105, which for that lustrum refer to 

 the Museo Rocha. It would be better to accept these values 

 rather than those previously printed. 

 Remarks. 



The data are given in part III. 



