i6o 



varieties bloom in the tropics. Some bloom e\en in New Jersey, 

 as I found when I had my experiments there in 1905-1906." 



(2) " In March and April there are plenty of seeds set, in other 

 months some, but not so many. The plants bloom less in the 

 other months too, but there are usually some flowers at any time. 

 The name of the variety I sent you seed from is, locally, " Venua," 

 but may be something else. We ha\e about a dozen varieties 

 growing together, and since bees work the flowers, there is always 

 the possibility of cross-fertilization." 



Figure 2. At 1 ft a group of seeds of the sweet potato. In the niiddle, 

 three seeds from a single pod and below the dry calyx lobes with pod entirely 

 removed. At the up. er right three good seeds and one rudimentary seed 

 from, a single pod; below these are the four segments of the wall of the pod, 

 while below is the remainder ol the pod and the (!r\' raly.x. 



B.\Ri{.\i)()S .VXD St. Vintkn't. (i) The report of the Depart- 

 ment of Agriculture for the year 1908 antl 1909 lists 51 \arieties 

 of sweet potatoes being grown in tests since 1906 and states that 

 30 seedlings were obtaiiU'd from seed of the \aric't>' X'incelonian, 

 II from Six Weeks, and lO from I\ala. The report for 1910 

 mentions 17 seedlings under cuIti\ation. 



