cast 8hov«d a still greator increase. Whather the in- 

 crease ie due to peas being a Xaguminous crop or to some 

 other cause is a question. The results seem to suggest 

 the importance of distinguishing between "weeds" when 

 studying their effect on either the soil or the crop. 



At the Cornell Station during the summer of 1905, 

 Gates conducted experiments to determine the effect of 

 "weeds" on corn. The "Weeds" were rye, millet, and 

 miscellaneous weeds. Tallevis adapted from Cornell 

 Bui. 247, 186, and shows the yield of both corn and weeds. 

 The table is arranged in jsnB& I, II, and III, and shows 

 the effects of rye, millet, and miSGeilaneous weeds 

 respectively. In each series, plats 1 and 4 are checks. 

 In the column "Productive Capacity, Com Fodder" is shown 

 what presuaably would have been the yield of corn fodder 

 had no "weeds" been grown on the plats. These figures 

 for plats 2 and 3 are calculfeted from Ihe checks 1 and 4 

 where no "weeds" grew. 



•Plats 1 and 4 were cultivated throughout the whole 

 period of growth, viz., about once in ten days from June 

 14 to August 22. On June 14, pj.at 2 was cultivated when 

 Series I was sown to rye, series II to millet, and series III 

 allowed to grow to weeds without furthsir cultivation. 

 Plat 3 was cultivated June 14 and again June 27, when each 



