19 



Hatch E.\ 



'i'KAL COLLECE 



TEZTxrai: of amhf.rst son. 



Wo 28 



The soil was a typical Amherst loam containing about 10 per cent 

 organic matter, and characterized as predominating in fine sand, 

 which, when not abounding in organic matter, has a marked tendency 

 to become compact with constant watering. The results of mechanical 

 analysis of a similar soil are shown in Fig. 4. No commercial fertiliz- 

 ers have ever been applied to the soil. Many liberal applications of 

 horse manure, however, have been frequently dug in as is customary 

 in houses devoted to lettuce, cucumbers and tomatoes in this section. 



The object of the tomato experiments was to ascertain which 

 constitutes the best method of pruning in greenhouses, and, inci- 

 dentally, to study the conditions which are essential for obtaining 

 vigorous and healthy crops free from disease. We experimented with 

 the single, double, triple and four shoot systems, and also with normal or 



