228 



Bulletin 230. 



Tuber I... -1 bud end 

 I stem end 



Tuber II.. i bud end 

 ( stem end 



Tuber III. -J bud end 



I stem end 



Average... ibuf'end 

 I stem end 



Dry matter. 



Per cent. 

 22. n 

 23.89 



20.65 

 25.50 



22.67 

 25.66 



21.83 

 25.016 



Starch. 



Per cent. 

 16.27 

 18.16 



14.68 

 19.2 



16.38 

 19.33 



15.77 

 18.94 



Protein. 



Per ce7it. 

 2.69 

 2.67 



2.65 

 3.09 



2.64 

 2.73 



2.69 

 2.83 



The analyses of only three tubers from one season's growth are 

 not sufficient to base conclusions upon, but it is believed that further 

 analyses will not materially alter the figures. 



This periodic digging revealed the fact also that, as a general rule 

 the tubers of this variety grow in close proximity in the hill. This 

 habit perhaps causes more tubers to become exposed when planted 

 shallow through crowding upward than would be the case if they 

 were more scattering in the hill. 



The following table shows the position which the tubers occupied 

 in the soil by number, weight and percentages according to the 

 depth planted: 



Some points shown by this table are worthy of note. 



The hills growing at a depth of two inches bore more tubers than 

 those planted at four and six inches, but the tubers at two inches 

 were least in total weight. As the depth of planting increased the 



