FoKMATIoX OF l'K( »LI FKKATloN. 



L>7 



TaBI.f. rX. — SumiiKini iif' iilisi rrations slioiriiKj invrtdstil iiii>rt(ilili/ in sijiKtn.s ami hulls rtinnnl 



hij proliferation. 



<' Weighted uveragi'. 



SUMMARY OF RESULTS OF OBSERVATIONS. 



FOR.M.VTIOX OF rUoLIFKK.V'lIO.N. 



In the portion of Tahlc IX rclatin^^ to sciuairs it .sliould he iKnicod 

 especially that proliferation follows weevil ))uneture.s in ai)|)roxiinately 

 one-half of the squares attacked, either for feedin*; or for ovijjosition. 

 The constancy of this ]>roportion may he most clearly shown l)y i)rini:- 

 ing tof]jether the general averages relating to this j)oint found in ])re- 

 ceding tables. 



Averatje percentage of squares in which proliferation follows weevil punctures as shoum in 



several precedin-j tables. 



Per cent. 



Tal>lo I. Fccdinf; puncture-^ in .><(|uarc.s — proliffiatioii fi)rmod 51. 6 



Tal)l(' III. Comparison Kinj: ami Sliim- s(|war('s — proliferation fornied 52. 3 



Tal)io V. Squares from fertilized and unfertilized jjlals -proliferation formed 52.1 



Tal)le VI. Squares from fertilized plats — proliferation formed 50.5 



Tnl)le VI. .Squares from unfertilized pints — proliferation formed 411.5 



Tal)le VII. Efig punctures in scpiares — proliferation formed .7). ."> 



Table IX. Increased mortality from proliferation — proliferation formed.. " '■ 



The general average of all these results show.s that prolircial ion 

 follows weevil attack in ol ])er cent of all cases. 



In the portion of the tal)le relating to bolls it ai)|)eais ihat inolifcra- 

 tion follows weevil attack in a somewhat higher jjrojxirl ion ol ca.scs 

 than it does in s(juares. A list of the ligiires for boll.s i.s here given 

 similar to that shown for s([uares. 



