44 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 90 



Instrument: The pressure values were obtained from a baro- 

 graph controlled by readings of a standard barometer, read 

 five times a day. 



Hours: The values are the means of hourly readings from the 

 barograms. 



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

 45°) by a Pply' n g a correction of —0.45 mm. 

 Temperature. 



Hours: The values are the means of the 24 hourly readings 

 from a thermograph, compared with a standard ther- 

 mometer five times a day. 

 Precipitation. 



Instrument: A recording rain gage of Fascianelli with a receiver 

 0.2 m in diameter was in use throughout the period. 



Notes: The exposure of the rain gage at the Observatory is 

 not good, and for comparison observations are taken at 

 Faja de Cima, a station with a good exposure near Ponta 

 Delgada at a height of 175 m. To make the values taken 

 at the Observatory comparable with those at Faja de Cima, 

 the observations should be increased by 59 percent. 



BERMUDA 



PROSPECT 

 Authority. 



1921-1930. Canadian Monthly Record published by the 



Meteorological Office, Toronto. 

 Site: Lat. 32 17' N., Long. 64 46' W. The latitude of 32 18' 

 N. given previously is incorrect. 

 Pressure. 



Hours: 8.30 h and i5 h were the hours of observation throughout 



the period. 

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

 45 ) by applying a correction of —.033 in. 

 Temperature. 



Observations: The combination ^(8 h 30 m + 20 h 30'" 4- Max. + 

 Min.) has been used throughout. 



CANARY ISLANDS 



LA LAGUNA 

 Authority. 



Observatorio Central Meteorologico, Madrid, Spain. 



