EXPERIMENT STATION BULLETINS. 



449 



It is manifest that the soluble carbo-hydrates are found very largely in 

 the leaves and ears while the ears are in the milk or in the roasting stage. 

 At periods later over half of the starch and sugar is found in the ears 

 and when the corn is fully ripe about twice as much i<* found in the stalks 

 as in the leaves. 



While it is a matter of subordinate interest, the following table is given 

 to show the movement of the ash, as the plant develops. 



It is interesting to note that later than August 31, more than half of all 

 the mineral elements existing in the corn resides in the leaves. During the 

 last week between September 7, and September 14, the leaves lose part 

 of their ash which finds its way into the stalks. The latter contain from 

 a quarter to a third of the total ash of the plant. The ears are relatively 

 weak in ash. 



The next table gives the chemical composition of the dry matter of the 

 leaves, stalks and ears of the dent corn whose history has just been 

 partly gone over, at the four dates, August 24, August SI, September 7, 

 and September 14, at which latter date the corn was glazed and dented 

 and fully ready to harvest. 



Composition of dry matter of leaves, stalks and ears of dent corn at different dates. 



The next table gives the analyses of the dry matter of the leaves, stalks 

 and ears of sweet corn, grown in 1896 on the dates given, viz., August 

 25th, September 1st, September 8th, and September 15th. 



57 



