54 FIELD AND LABORATORY STUDIES OF CROPS 



inches apart. The germinator is prepared by filling the 

 box to within one inch of the top with moist sand. The 

 surface, having been leveled and compacted by means of a 

 smooth block of wood, is marked off into small squares 2X2 



Fig. 21. — Four Sections from the Germination Box. Nos. 1 and 2 

 Show Strong, Vigorous Growth. No. 3 is Weak, while No. 4 

 Shows Three Dead and Three Weak Grains. 



inches, by means of a cord which is laced back and forth 

 through the saw cuts in the edge of the box. Beginning in 

 the upper left-hand corner, the squares are numbered from 

 one to fifty. 



