6 
From observations taken at San Pedro de Macoris, Santo 
Domingo City and Azua it is known that there is a decrease in 
the rainfall to the westward. The average yearly rainfall at the 
most easterly point is about sixty inches, at Azua it is 20.57 inches, 
This explains why the regions about Azua and Monte Cristi (a 
region climatically similarly situated) are the cactus gardens of 
Santo Domingo. It brings us also to the fact that the condi- 
tions are the same here as in the other West Indian Islands, as 
regards the rainfall in its relation to the wind and intervening 
mountains. During 227 days in the year the wind blows east, 
northeast or southeast. The great mountains situated to the 
windward of’the regions about Azua and Monte Cristi collect the 
greater part of the moisture that comes in from the sea, leaving 
the leeward portions comparatively dry. 
I append temperature records, in so far as they have been 
available. They are constructed from maximum and minimum 
readings, averaged. 
TEMPERATURE RECORDS, FARENH. 
Jan. Feb, March, April, May. June. July. Aug. Sept. Oct. Nov. Dec. 
San Pedro de Macoris. 75.8 75-6 75.4 79.2 81.1 82.5 81.5 80,2 81.0 80.0 76.4 74.8 
Santo Domingo City. 76.0 77.0 
1g09. 
Jan. Feb. March. April. May. June. July. fs mie Oct. Nov, 
San Pedro de Macoris. 73-3. 73-8 77.9 77-9 80.3 822 82.5 82, 82.8 81.1 74.4 
Santo Domingo City. 75 752 76.5 80.0 76.2 79.7 814 i oe 80.3 76.4 
The steamer arrived at Sanchez on October 21, and collecting 
was started in the afternoon of that day. A mountain at the 
ack of the town was climbed and some ferns, orchids and 
bromeliads were secured. The hill is known as “ Las Canitas” 
and is supposed to be 1,700 feet high, but can scarcely be more 
than 1,000 feet. Another ascent of this mountain was made 
at a different place, a cafion containing many interesting speci- 
mens being explored. A passion-flower vine with scarlet flowers 
formed a conspicuous feature in the vegetation, together with 
were also found. It seems probable that the vegetation on “ Las 
is quite similar to what might be found on any one of 
the other mountains on the Samana peninsula. 
