17 



the eight years were, — the whole seed, 30.7 bushels of grain and 14 

 tons of straw per acre, and the split seed, only 10 bushels of grain 

 and 3-5 of a ton of straw per acre. 



SouNT* AND Weevilly Seed. Many observers have noticed fre- 

 quently that the weevil is not full grown Avhen the peas are harvested, 

 and has not eaten much of the substance of the pea. We have also 

 observed this fact ; but very frequently we have observed that the 

 grub is full grown and in the pupa or the imago state, and has done 

 practically all the harm that it is capable of doing. 



Fig. 5. (a) An infested pea showing the spot where the weevil entered ; 

 (6) a pea not infested, with " skin" on ; (c) same as {b) but with" skin" re- 

 moved ; (d) an infested pea showing how the germ is often destroyed by the 

 weenl, "skin" on ; (e) same as (d) but " skin " removed ; (/) an uninfested 

 pea opened up into halves showing- the germ ; (g) an injured pea opened 

 up, showing how the weevil often destroys both the food and the germ. 

 (Original.) 



When the grub is not full grown, the fumigation of the peas will 

 preserve them from further injury ; but when the weevil has reached 

 the pupa stage, it has done all the injury of which it is capable. 



It is frequently stated that the grub, when working in the pea, 

 avoids the germ or embryo, and that peas which are bored with the 

 weevil are as valuable for seed as those which are not thus injured. 

 Such statements are wholly incorrect. On examining many hundreds 

 of " weevilly " peas at various times, we have found that the great 

 majority of the seeds have their germs completely destroyed, and that 

 2—126 



