THE LEAD-CABLE BORER IX CALIFORNIA. 



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Nil adult penel ruled all ol 1 he layers. 



Eight emerged and escaped through the fourth 



leaving two In fifth. 

 Three emerged and escaped through the fourth, 



leaving one in fifth. 



This was greatest penetration, about l inch. 

 Six emerged through first and escaped. Layers 

 unevenly rolled 



Last two emerged at fifth and sixth and escaped 

 Eighteen emerged through second and escaped. 



Three strips were roiled together. 



Two emerged through third and escaped. 







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Number 



of layers 

 or thiok- 



n esses 

 used. 



10 to 11 



i to 5 



I to 5 



28 to 27 



1 to 2 



2 to 3 

 6 to 7 



2 to I 

 6 to 9 



3 to f 



1 to 3 

 3 to i 



2 to 3 



2 to 3 



3 to 1 



2 to 3 

 3 

 2 to 3 

 2 to 3 

 2 to 3 

 1 to 2 



ind Of metal used. 



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