INSECTICIDE STUDIES. 



M-nt to ouch 0110 whose goods had been examined. giving him the 

 ivsults of our analysis and asking for any comments that he might 

 desire to make. Such parts of the an-wer> as throw any light upon 

 the subject are given, as follows: 



SferioZ X<>. 340. 



* * * You say that tin- Yaroter-Bo--- I>rnir Company. of Lafayette, Ind., fur- 

 nished you with a sample of our insect powder containing O.L". iercent of lead chro- 

 matf. If such is the case, they added the lead eliminate themselves, as we do not 

 use it. We do not color our insect powder, hut leave that for the customers to do if 

 their trade demands a highly colored powder. 



ALLAIRE. WOODWARD A: Co. 



Comment: Et appears that the above sample was probably colored 

 after it left the hand* of the manufacturer, since seven other samples 

 of Allaire. Woodward oc Co.'s goods (N OS, i'5i. i>71. L>SO. L >,sl. 'V.4. 4'.;, 

 and .V.U ) contained no lead chromate. 



Serial No. 



* * * From the mana-vr of <>ur importing department we also receive the posi- 

 tive assurance that the powder entering into your sample No. 27.'5 could net possibly 

 have contained lead chromate as it left the hands of his department. It goes without 

 saying that wt- never add lead chromate or any other foreign substance to our insect 

 powder and that the adulteration which you report must have been deliberately put 

 into it by s .me interested person after it passed out of our possession. 



I'AKKK, DAVIS ^ Co. 



Comment: It appear- from investigations which have been made 

 that the above sample received the lead chromate after it left the 

 hands of the manufacturer named, if indeed it were manufactured by 

 the linn originally. Fourteen other samples of Parke. Davis c Co. 'a 

 good- (Nos. 272, 313, 331, 334. 885, :-JiH. 4<>i>. 403, 510, Ml, r,47. 648, 

 '>4!. ;i>4) contained no lead chromate. 



N- I'ifll \n. 386. 



* * * M.-H--. K. I >. Stearns ^ Co.. r.urlin^ton. Vt.. are in error as to the source 

 oi the per.-ian insect powder which they furnislu-d your representative, stating that it 



c;ime from mir firm, and we have written them to that effect and asked for an expla- 

 nation. We have examined their entire account for the year I'.iOl*. and positively 

 -tale that they did in>t purchase any insect powder of u>. and if they had it would 

 have been found to b<- perfectly pure, as we d not allow any adulteration of lVr>ian 

 powder Mild by us. 



>i 1111:1 l'i:i IN A 



: It i< probable that the retailer made a mistake in giving 

 the -oiii-ce nf hi- inject powder, since another >ample furnished by 

 SchiellVlin ^ ('<>. (No. iv.') contaiin'd no lead chromate. 



"' \". .;/;>. 



We presume that this analysis is approximately correct, and that then-litre 

 there i> foici-n matter in the ins.-ct powder amountim: t" a little over one-half ol 1 per 

 rent. This additional matter i< undoul)tedly added, not for the purpose of adnl- 



