80 



Northern Spy. — Eapid, upright growth. Tardy and moderate bearer. Young 

 shoots, large, dark reddish-brown. Winter. 



The following table shows the composition of the leaves, together with such 

 other data as may help to elucidate the question under consideration. After the 

 column containing the name of the apple tree and the date when the leaves were 

 gathered are three columns, representing in percentages the composition of the 

 leaf — the water, organic matter and mineral constituents. Then follow six columns, 

 showing the percentages in the ash of its chief inoj'ganic components. The per- 

 centages of nitrogen in the dry organic matter are then given, followed by columns 

 depicting the amounts of nitrogen, phosphoric acid and potash contained in 1,000 

 lbs. of the green leaf, and which serve to illustrate the absolute and relative values 

 of the leaves as a. fertilizer, as well as to show tlie quantities of these materials taken 

 from the soil for the growth of the leaves. 



