112 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 79 



Note: A correction for gravity of —2.0 mm. was applied to re- 

 duce the pressure to Lat. 45°. 

 Temperature. 



Authority: Robert C. Mossman. 



Hours: Hourly records from apparatus Theorell up to 1909, 

 then ^(7^1+14^ + 21^) corrected to means of 24 hours by 

 the following corrections in tenths of degrees C. : 



Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Deo. 

 __0.2 —0.1 —0.1 —0.1 —0.1 0.0 0.0 —0.1 —0.1 —0,1 —0.1 —0.1 



Precipitation. 



Authority: Robert C. Mossman. 



RECIFE 

 Pressure. 



Authority: From 1887 to 1898 taken from the reports of the 

 Brazilian Government on file in the library of the Oficina 

 Meteorologica Argentina. Pressure from 1900 to 1922 fur- 

 nished in manuscript by the Directoria de Meteorologia, 

 Tnstituto Central, Brazil. 



Site: Port Works Station. In December 1922 the station was 

 moved to Olinda's hill near Recife. 



Hours of Observation: From 1887 to 1909 five tri-hourly obser- 

 vations were made between 6^ and i8'\ From 1910 to 

 1922 observations were made at 7^, 14^ and 2i'\ 



Note: All values were corrected for temperature. They were 

 also corrected to normal gravity at 45° Lat. by applying a 

 correction of —2.0 mm. 

 Temperature. 



No data obtained. 

 Rainfall. 



AutJioriiy: 1875 to 1909 data sup])lie(l by R. C. Mossman. 1910 

 to 1922 furnished by Directoria de Meteorologia, Brazil. 



Site: Port Works. 



RIO DE JANEIRO 

 Pressure. 



Authority: Directoria de Meteorologia, Instituto Central. P)razil. 

 Site: Observatorio do Castello until 1922, height 61.4 m. above 

 sea-level. In 1923 the meteorological service was moved to 

 a new site and the height of the l)arometer was 33.0 m. above 

 sea-level. A correction of —2.4 mm. was applied to reduce 

 the mean values to the old level. In 1924 the .Service was 



