35 



There are 28 varieties of Cassava collected from different parts 

 of Jamaica, 10 from Porto Rico, and 30 from Colombia. These 

 68 varieties are being tested as to weight of tubers per acre, and 

 percentage of starch. The starch is said to be better for laund- 

 ries and for dressing Manchester goods than that produced by 

 any other plant. It is claimed also that Cassava yields more 

 starch per acre than ony other plant. 



Similar tests, besides value as food, are also carried out with 

 reference to Sweet Potatoes, — 2^ varieties from Jamaica, 12 from 

 Barbados, and 9 from the U. S. Dept. of Agriculture, Washington, 

 D. C. 



Results of tests of plants are published from time to time in the 

 Bulletin and Annual Reports. 



A plan of the cultivated portions of the Government grounds is 

 given, so that visitors may readily find any particular kind of 

 economic plant grown there for experimental or teaching purposes. 



The following is an Index to the numbers on the plan : — 



