26 



great, as will be seen from the measurements of 17 plants grown in the 

 garden of the Department of Agriculture, given in the following table: 



Measurements of sunflowers made July 29, 1897. 

 (All terminal flowers were fully opened unless otherwise stated.) 



1 Measured from tip to tip of two opposite outstretched leaves which were selected at about one-half 

 the height of the plant. 



2 Measured from beginning of the expansion of the petiole into the leaf skeleton to the tip of the 

 leaf. 



a Measured from opposite points of the circle marking the insertion of the yellow rays. 



4 Measured at the middle of the lowest internode. 



5 Not fully out. 



Diameters of sunflower disks, September 13, 1897. 



COMPOSITION AND CHARACTER OF SEEDS AND OTHER PARTS OF THE PLANT. 



The sunflower seeds corresponding to serial No. 14183 were the striped 

 Russian variety, procured from Sulzer Bros., of Madison, Ind., and 

 those corresponding to 14184, the ordinary black variety derived from 

 the same source. The following table shows the weight of 100 of the 

 seeds and the relation between the kernel and the shell of each variety: 



