100 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 79 



The values for 1891 to 1907 are corrected to 4(9''+ 18'') by 

 the addition of the following corrections : 



Jan. Feb. Mar. .Apr. May .June July .\ug. Sept. Oct. Nov. Dec. 

 3" to Acgh + 18'') 



inches —.031 —.032 —.034 —.035 —.030 —.023 —.028 —.028 —.026 —.038 —.036 — .OSfl 



A'ofcs: All values are reduced to normal gravity (Lat. 45°) by 

 applying a correction of —.070 in. 

 The Gazette for October 1920 was not available. The 

 " Annual Report " for 1920 contains means of 

 pressure at 9'^ reduced to Mean Sea I.evel. and a 

 correction of —.565 in. has been applied in order 

 to reduce the mean for October to 509 ft., 

 Kq^+iS*^) and Lat. 45°. 

 Temperature. 



Authorities: As for Pressure. 



Site: As for Pressure. 



Observations : The standard adopted is the mean of the mean 

 daily maximum and the mean daily minimum. 

 These figures were unreliable in certain months and 

 the values in italics have been computed from the 

 9'^ dry bulb observations I)y means of the follow- 

 ing corrections obtained from the records of other 

 years which appeared to be reliable. 



Jan. Feb. Mar. Apr. May June July .\ug. Sept. Oct. Nuv. Dec. 

 9" to 



J(M + m) °F. —0.3 —0.3 —0.5 —0.8 —1.0 —1.0 —0.9 —0.9 —1.1 —1.2 —1.1 —0.7 



Precipitation. 



Authorities and Site: As for Pressure. 



TRINIIJAD 



Lat. 10° 40' N. Long. 61° 31' W. 

 Pressure. 



Authorities: 



1862 February to 1879 December. Appendix to Re])ort on 



the Botanic (iardens, Trinidad for 1880. 

 1880 to 1882. A]:»pendix to Report on the Botanic (iardens, 



Trinidad for 1882. 

 1883 to 1884. Appendix to Re])ort on the P)Otanic Gardens, 

 Trinidad for 1883 and 1884. 



1885. No information available. 



1886. ]\Ianuscri])t data communicated by the Director of 



Agriculture, Trinidad. 



