CHEMICAL CHANGES IN CALCIUM ARSENATE. St 
TABLE 2.—Effect of storage on chemical composition of calcium arsenate—Continued. 
{ 
| 
- 4| Water-| Car- | | ersaq| Water-| Car- 
Period Period | 
Sampleex- | Date of cca ete Sample ex- Date ae ae 
amined. sampled.| stor- |" oxid | oxid amined. sampled.| stor- |*osa'"| oxid 
IT (100 pounds | | '| IS-3 (25 pounds in 
in paper-lined | 1920. Mos.| Per ct.| Perct. || paper-linedsug-| 1920. is Per ct.| Per ct. 
sugar barrel)..-| Apr. 20 |....... 0. 08 5.95 || arbarrel)(con.).| Sept. 17 4.9 0. 93 6. 59 
ay 4] 0.5 .07| 5.61 | Oct. 15] 5.8] 93 | 6.20 
June 10} 1.7 .06 | 5.92 Nov.17| 6.9] .92| 6.37 
July 14} 2.8 07 | 6.25 | Dec. 15} 7.8 | 96 | 6.61 
Aug. 14 3.8 . 07 5. 85 1921. | 
Sept. 17 4.9 . 06 6. 08 Jan. 15} 8.8; .91 6. 64 
Oct. 15] 5.8 .05| 5.94 Apr. 2] 11.4 .88 | 6.46 
Nov. 17 6.9 12 6. 76 July 1 14.3 . 90 6.41 
Dec. 15 7.8 12 6. 69 07 ae | OE 7 « 94 6. 40 
1921 1922. 
Jan. 15| &8| .28] 6.90 Jan. 2| 20.4 94| 7.10 
Apr. 2] 1.4 18 6. 60 Q . 
July 1| 143] .65| 7.4 ee id sealer is | 
Oct. "I ] 17-3 42) 7.18 On | 9 
1922 ; 2 barrel) o- 2% - . J ADEs “ aes oe ae 
; - -p aie une : 32 512 
pan. 2} 24 | ___f 44. July 14/28} 232] 5.90 
IS (100 pounds | Aug. 14 3.8 39 5. 83 
in paper-lined 1920. Sept.17| 4.9 51 5. 65 
sugar barrel)... 7 oe. ee .39 5. 69 Oct. AS 5.8 49 5. 71 
| June 10 47 .38 6.12 Nov. 17| 6.9 Ar) 6. 00 
July 14} 2.8 237 5. 70 Dee--15.-|-— 78 71 5. 98 
Aug. 14 3.8 - 50 5. 79 1921 
Sept. 17 4.9 . 59 6. 23 Jan. 15} 8.8 63 6. 40 
Sri ts 5.8 . 69 6. 08 Apr. ~2| 114 Rw | 6. 23 
Nov. 17 6.9 .73 6.16 July” 2), v3 78 6. 27 
Dec. 15 7.8 . 68 6. 39 Oct. 81 17.3 94 6. 43 
1921. j922. | 
Jan. 15 8.8 .79 6. 46 Jan. 2) 20.4 94 6. 30 
Apr. 2} 11.4 .77| 6.49 | 2 
iaiy i] ia | ia] sae | 15.6 C5 pounds) 
—_ 17.3 -83} 6.42) veneer drum).. Ao = — 37 owe 
. Z une 10; 1.7 : . 36 
Jan. 2) 20.4 88 | 6.89 July 14| 2.8| 62] 611 
IS-1 (25 pounds | 1920. Aug. 14/ 3.8] .79| 6.25 
in metaldrum)} Apr. 20 |....... .36| 6.09 | Sept.17/ 4.9 .97| 6.45 
June 10 CT | Be 5) 6.06 | Oct. 15 5. 8 .99 6. 30 
July 14| 2.8] .32| 5.58) Nov.17| 6.9] 1.00] 6.54 
Aug. 14] 3.8 36] 5.82 Dec. 15| 7.8 .96| 6.64 
Sept. 17 4,9 . 43 5. 85 | 1921 
Oct. 15 5. 8 son ST Jan. 15 8.8 97 6.78 
Nov.17]} 6.9 «oT 5. 86 | Apr. 2] 11.4 92 6. 32 
= - - 
Dee. 15 7.8 40 5, 24 | July 1 14.3 . 90 6. 42 
1921. | Oct=.. bl tis -99 6. 61 
Jan. 15 8.8 36 6. 00 1922. 
Apr. 2] 1L4|  .35/ 6.01 | Jan. 2| 20.4| .97| 6.27 
y 1) ; 6.11 | yw (50 pounds | 1920 
aor Yj 42.3 -36 6.08 in metal drum)| Apr. 12 |....... . 30 2. be 
Jan. 2] 20.4] .54] 5.78 ou en some | eae | Seog 
IS-3 (25 pounds Jan. 14| 9.1| .30|] 277 
in paper-lined | 1920. | July 20; 15.3 -28| 2.64 
sugar barrel)...| Apr. 20 |....... -31| 5.51 || Nov. 25| 19.4 oot. aod 
June 109 EY . 4 6. 09 || 1922. 
July 14] 2.8 Bal ij 6. 58 Mary f 2220 1s se: lessee 
Aug. 14 3.8 .92 6. 55 | 
WIP SFA 
7 
Fig. 41.—IS (100 pounds in paper-lined sugar barrel). 
