42 BULLETIN 965, V. S. DEPAKTMENT OF AGRICULTURE. 



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P 



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REPRESENTS 

 /0/fC/?ES 0FC/TRU3. 



/?A/rCOA/T/?OL 

 /A/'/9(/0i//?/9T£D /A//9/Z 



/9A/T COA/TROL 

 /mUGUFfiTEOIN 1913. 



/^NTCOA/TROL 

 //^/9a&(/Ri9T£D IN 19/9. 



0£MOA/677?/rr/OA/P/.07S. 



YE/?/? 



/9/7 



/9/a 



/9/9 



70T/9L 



NEyy/9R£/? OA/DE/? CONTf^OL 



/60 



3eo 



/'=f-0 



630 



COMPLETE RA/T EP/fD/CRT/OA/ 





/so 



300 



^SO 



EA/T/RERRER OA/OER COAfTROL /N /QBO. 







Fig. 21.— Diagram of the area under Argentine ant control at Upland, Calif., 1917-1919. 



