1912.1 



PUBLIC DOCUMENT — No. 31. 



83 



vigor of the plant and the second of its prodnctiveness, — two 

 qualities of the greatest economic importance. 



All the measuring for the past three years, when most of the 

 plants have been handled, has been done by one individual, thus 

 avoiding the slight diiferences that might result from the work 

 of diiferent men. 



The vines have been carefull}- pulled when well ripened and 

 carried to a convenient table where the measurements have been 

 made. Vine length has been taken from the surface of the 

 ground to the uppermost node of the main stem. Wliere there 

 were branches they have been measured, but are not used in the 

 computations, though it might have been more desirable to have 

 done so. However, it is not felt that in that case the results 

 would have been materially diiferent. All pods have been 

 counted whether large enough for commercial purposes or not, 

 as have the peas in the pod. The measurements have been re- 

 corded on 5 by 8 cards, recording the data as shown in Fig. 1. 



Fia. 1.— Pea Record Card. 



