INJURIOUS INSECTS OF 1903. 



33 



ATI^AMS. SPRETUS. 



Fore and Middle femora — 



The thighs (first long joint on Front and middle thighs of male 

 leg next the body) of fore and only slightly swollen, 

 middle legs of male somewhat 

 swollen. 



Hind tibiae. 



Hind tibiae (next long joint after Hind tibiae bright red, spines 



the thighs) may be red, or 

 pale or pale green, or pale 

 yellow or dark blue; spines of 

 hind tibiae black beyond th? 

 base; 9 to 12 spines in the 

 outer row. 



black almost to the base, 10- 

 II spines, rarely 12, in the 

 outer row. 



POOR PARIS GREEN. 



Reports reach the Entomologist that different samples of 

 Paris Green of the same brand give widely different results, 

 one party stating that although carefully used in the propor 

 tions recommended it killed foliage as well as the insects, and 

 another that the insects treated do not appear to be affected. 

 Especially is this true of its use against potato beetles, many 

 complaining of its burning the foliage badly and giving gen- 

 erally unsatisfactory results. From these observed facts it 

 is evident that there is much Paris Green on the Minnesota 

 market, which, instead of having a constant amount of arsenic 

 in its composition in combination with copper, has a varying 

 amount of free arsenic, in other words, is adulterated with 

 arsenic, and as analysis has shown with other, to the farmer, 

 useless substances. Some of the leading brands of Paris 

 Green, which are largely used in Minnesota", are made in New 

 York State. In that state the original law required that there 

 should be at least 50 per cent of arsenic in all Paris Green or 

 products analogous to it, manufactured therein. Some of the 

 manufacturers followed the letter of the law, but, in some 

 cases, to put a charitable construction on the case, through 



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