Occasional Papers of the Museum of Zoology 7 



drier months. In fact, it seems probable that the differences 

 between the stations recorded are quite largely due to such 

 local factors as the height of the hills in their vicinity. How- 

 ever, none of the "seroes" is high or large enough to produce 

 am-thing like a rain forest. Sint Christoffelberg (1,229 feet), 

 on its western side near the summit, is the only place where 

 bromeliads and other epiphj-tes are at all conspicuous. 



The data sent me by Ir. IMolengraaff show a rather high and 

 constant humidity, during the dajiiime, at Fort Amsterdam, 

 Willemstad, Curacao. The mean annual (August, 1910, to 

 December, 1920) and the variations in the mean monthly rela- 

 tive humidity are: at 8 A. M., 74 and 73-75, respectively; at 

 2 P. M., 71 and 68-72; at 6 P. M., 73 and 71-74 per cent. 

 Although I have no data to present, I believe that dew is a 

 comparatively rare and inconspicuous phenomenon on the 



7 The records from Fort Amsterdam, Willemstad, Curasao, cover a 

 period of from 28 to 29 years, dependent on the month (Jan. and Feb., 

 1895-1923 ; Mar. to May, 1895-1922 ; June to Sept., 1894-1922 ; Oct. to 

 Dec, 1894-1921). From Oranjestad, Aruba, they cover a period of 16 

 years (1901-1916). From the two localities on Bonaire, they cover a 

 period of 12 years (1905-1916). 



