﻿ARSENICALS. 



45 



Table 21. 



-Relation of arsenic rendered soluble by insects to toxicity of arsenir/ih, 1919 

 and 1920. . .„ 



Arsenicals. 



Commercial acid lead arse- 

 nate 



Commercial basic lead arse- 

 nate 



Commercial calcium arse- 

 nate 



Commercial white arsenic . . . 

 Laboratory Darium arsenate. 

 Laboratory calcium meta- 



arsenate 



Commercial Paris green 



Sample 64 pluslime (2 grams) 

 Commercial magnesium 



arsenate 



Commercial London purple. 

 Commercial zinc arsenite . . . 

 Laboratory copper barium 



arsenate 



Pure arsenic oxid 



Laboratory sodium arsenate. 



Total 

 number 



of 

 Insects 

 ana- 

 lyzed. 



IVrcc-nin.'v of ai >n!<-. 



35.7 



5.2 



30.5 



2.4 

 15.9 

 11.0 



37.9 



33.2 



6.0 



6.2 

 100.0 

 100.0 



Soluble in bodies of- 



44.5 



28.8 



78.6 

 64.8 

 69.4 



41.8 

 98.3 

 91.8 



80.3 

 84.3 



58.4 



74.6 



88.4 

 73.4 



46.0 



37.7 



60.6 

 33.9 

 30.3 



39.1 

 44.3 

 37.4 



59.9 



48.4 

 63.8 



59.2 

 70.9 

 54.4 



63.5 



84.7 

 20.0 

 64.0 



22.6 

 71.0 

 61.2 



98.7 

 95.1 

 73.9 



58.8 

 89.6 

 89.7 



58.0 



43.3 



74.6 

 39.6 

 54.6 



34.5 

 71.2 

 63.5 



79.6 

 75.9 

 65.4 



64.2 

 83.0 

 72.5 



Made soluble by Juices 

 of— 



27.2 



21.6 



42.9 

 59.6 

 38.9 



39.4 



82.4 



42.4 

 51.1 

 52.4 



28.7 

 30.5 



24.9 



28.7 

 .0 



36.7 



28.4 

 26.4 



22.0 

 15.2 



57.8 



66.2 



56.3 



49.0 

 14.8 

 33.5 



20.2 

 55.1 

 50.2 



60.8 

 61.9 

 67.9 



52.6 



40.7 



36.1 



38.9 

 34.4 

 24.1 



32.1 

 55.3 

 52.5 



41.7 

 42.7 

 59.4 





Arsenicals. 



a> 

 §co 



d o 

 op 



g CO 



03^3 



& a 



03 



¥ 



Eh 



T3 . 

 co "" 



a ™ 



cod 



&•§ 

 ,2 8 



as 



« a 



Average amount of arsenic per 

 insect analyzed. 



3a 



o 



an 



.2-w 



52 c3 

 C3 - 



<- K-i 

 o as 



> & a 



d 



ft 



1 



os 

 w 



33 



<D 



,ffl 



>> 



CD 

 g 



CO 



g 



O 



s 



a 



'I 



o 



"3 



*~ 



63 

 CO 



> 



< 



39 





78.5 

 61.7 

 65.5 

 69.5 

 51.0 

 17.5 

 79.5 

 66.7 

 71.0 

 73.7 

 77.5 

 66.0 

 78.5 

 82.4 



Per ct. 



0.61 



1.73 



.20 



38.00 



.68 



.04 



3.52 



3.52 



4.64 



5.30 



1.25 



6.27 



100. 00 



100. 00 



Mg. 

 0.0223 

 .0142 

 .0099 

 .0091 

 .0105 

 .0120 

 .00S7 

 .0075 

 .0120 

 .0068 

 .0132 

 .0058 

 .0165 

 .0180 



Mg. 



0. 1212 

 .0803 

 .1245 

 .0914 

 .0694 

 .0676 

 .1203 

 .1157 

 .1460 

 .1315 

 .1430 

 .0675 

 .1130 

 .096S 



Mg. 

 0.0126 

 .0158 

 .0189 

 .0285 

 .0138 

 .0110 

 .0143 

 .0276 

 .0173 

 .0305 

 .0220 

 .0177 

 .0600 

 .0169 



Mg. 

 0. 0520 

 .0368 

 .0511 

 .0430 

 .0312 

 .0302 

 .0478 

 .0503 

 .0584 

 .0563 

 .0594 

 .0303 

 .0632 

 .0439 



6.0 



?8 





6.0 



57 





6.0 



97 





6.0 



71 



Laboratory barium arsenate 



5.8 



45 

 64 



Laboratory calcium meta-arsenate 



5.9 

 5.9 



640 





5.8 



62 



90 



Commercial magnesium arsenate 



6.0 

 5.8 



?3 





6.0 



74 



m 



Laboratory copper barium arsenate 



6.0 

 5.9 



25 





5.9 









The following deductions are made from the results shown in 

 Table 21: 



(a) Samples 45, 27, 23, 74, and 28 are very stable in water (slightly 

 soluble as compared with control results) ; samples 64C, 64, and 39 

 are moderately stable in water; samples 71, 90, 57, and 62 are 

 unstable in water; and samples 10 and 25 are totally water soluble. 



