96 
then bends abruptly to the south and its upper valley is narrow 
and with steep slopes. The Yumuri enters the bay through a 
deep, narrow gorge, with precipitous sides, which it reaches 
through another broad valley similar to that of the lower San 
Juan. Another river, the Canimar, enters the bay of Matanzas 
some six miles east of the city, winding for several miles among 
high hills, some with vertical, some with sloping sides, its upper 
valley being broad and extensively cultivated. The plants of these 
three river valleys were carefully studied, as well as those of several 
tributaries and of the intervening uplands, access to different 
Fic, 12, Valley of the Yumuri, Matanzas, Cuba, with Royal Palms ( Xoystonea 
regia). 
points being had by walking, by carriage and by boats. Three 
large boxes of living plants, including orchids, palms, aroids, 
bromeliads and agaves for the conservatories, together with seeds 
of many other species were shipped from Matanzas, and collec- 
tions for the herbarium and museums were made of 572 kinds of 
plants, aggregating over 2,000 specimens, being a good representa-- 
tion of the spring flora of the region. The underlying rock of: 
the Matanzas region is coral-limestone, both of the hills and of 
the lowlands, 
