54 SMITHSONIAN MISCFXLANEOUS COLLECTIONS VOL. 105 



BOLIVIA 



LA PAZ 



Authority. 



Observatorio San Calixto, La Paz. 



BRAZIL 



Authority. 



Servigo de Meteorologia, Dr. Francisco Souza, Director, Rio de 

 Janeiro. 

 General Note. 



On January i, 1938, there was a change in the hours for taking 

 observations which are as follows : Up to December 31, 1937, 

 the observations were taken three times a day, at 'f', 14^, and 

 2\^ local time; on January i, 1938, the observation hours 

 were changed to \2}\ i8'\ and 24'' G.M.T. (except in the 

 state station of Juiz de Fora, which continued with the old 

 hours). In the first of the above-mentioned periods, to calcu- 

 late the daily averages, the following formulas were used : 

 Pressure =:-K 7'' +14" + 21''). 

 Temperature = |( 7" -|- 1 4'' -1- 2 1 ^ + 2 1 " ) • 

 In the second period the formulas provisionally used were : 

 Pressure = ^(i2''+i8'^-f-24''). 

 Temperature = ^ 1 2^^ + 1 8"^ -(- 24" -^ Min. ) 



MANAUS 



Site. 



Up to July 31, 1933, the barometer readings were at 43.78 m. 

 above sea level, and from that date onward the readings 

 were at 44.40 m. 



OLINDA 



Site. 



Until September 9, 1932, 115 = 29.76 m. ; from that date to 

 April 16, 1934, Hb = 2i.45 m. ; thereafter Hb = 6i.85 m., 

 which is its present height. 



ONDINA 

 See data for Salvador. 



