/ 
CHEMICAL CHANGES IN CALCIUM ARSENATE, 25 
TasBLe 3.—Effect of type of container on chemical composition of calcium arsenate during 
storage. 
| od} selubie | Carbo Period| selnble(Carl | 
Period} soluble | Carbon y eTiod| soluble |Carbon 
Type ofcon- |. — ofstor-| arsenic Sypepie Peta: * ofstor-| arsenic | dioxid 
tainer. ample. | age. | oxid a Sampiec-| age. | oxid |(CO2). 
| (AS20s) (AS:05)| 
| es | —_——_ 
Metal drums Hardwood bar- | | 
(samples AS- rels (samples | 
1, BS-1, CS-1 AS-4, BS-4, | 
FS-1, HS1,| 1920 Mos. | Per et. | P CS-4, FS4, 1920 Mos. | Per ct.| Per ct. 
IS-1jpe.ts 3 } Apr. 20 }....-.- 0-18 HS+4, IS-4)...| Apr. 20 }....... | 0.17| 3.54 / 
| June 10 1.7 | 14 June 10 i ay 16 3. 54 | 
July 14 | 28] (2B July 14 | 2.8| ..15| 3.67 
Ang. 14 9-04-13 Aug. 14 378) 3.17 | 3.91 
Sept.17| 49 15 Sept. 17 4.9} .22| 3.91 
Oct. 15} 5.8 13 Oct. 151 5.8] .23] 4.06 
| Nov. 17 6.9 | 13 | Nov.17| 69] .26] 4.37 
| Dee. 15| 7.8 14 | Dee. 15| 7.8 | .29| 4.51 
| 1921. | | 1921. 
| Jan. 15} 8.8 14] 3.53} Jan. 15] 8&8 | .27 | 4.47 
| Apr. 2] 114 .14| 3.45 Apr. 2] 11.4 31| 4.49 
; July 1] 143 .13 3. 54 |) July 1] 14.3} “3 4. 86 
fOd. 11 17.3}  .14]~ 3.36] Oct. 1| 17.3] 142 | 5. 06 
| 3922. | | | 1922 | 
|} Jan. 2 20.4 16 3. 33 |) | Jan. 2 | 20.4 | 46 5. 09 : 
| i} | 
Paper-lined ) | Paper-lined | | | 
sugar _ barrels | | | veneer s | 
(samples AS- | } (samples AS | 
3, BS-3,CS-3,| 1920. | 6, BS-6, CS-4, | | 
S-3, IS-3)-..-] Apr. 20 j......- | - .48| 400j)| FS6, HS6,! 1920. | 
| June 10 1.7 | 26} 4.41 15-8) csp ven, Apes 2h p-+- 16} 3.53 
July 14] 28) .32) 477] | June 10| 1.7 .16| 3.56 
Aug. 14] 3.8] 4 5.29 July 14] 2.8 | .20| 3.56 
Sept. 17 | 4.9} -47 5. 50 | Aug. 14 3.8 .23 3. 74 
Oct. 15| 5.8] .45 5 46 | Sept.17} 49] .28| 3.81 
Nov. 17 6.9 .50} 6.09 | | Oct. 15} 5.8 .2| 3.73 
Dec. 15| 7.8 -49| 6.27 | | Nov.17| 69 .29| 4.29 
| Dec. 15) 7.8]  .29] 4.58 
1921. | 
Jan. 15] 8&8 52] 6.27 1921. 
Apr. 2] 11.4 -55| 6.25 |Jan. 15| 8.8 .32 
July 1] 143 .55| 6.31 | Apr. 2] 11.4] 31 
Oct. 1] 17.3 .55| 6.34] July 1] 14.3 
r | | | Oct. 1] 17.3 | 
| 
| Jan. 2/ 20.4 60} 6.45 | 1922 
| | Jan. 2] 20.4 52 
FEA CELI 7 
O 
Fig. 47.—Average results with AS-1, BS-1, CS-1, FS-1, HS-1, IS-1 (metal drums). 
