CHEMICAL CHANGES IN CALCIUM ARSENATE. 15 
Taste 2.—Effect of storage on chemical composition of calcium arsenate—Continued. 
Period Water-| Car- Period Water-| Car- 
luble| bon ¢ soluble} bo 
Sample ex- Date an tet Sample ex- Date of ; = 
amined sampled. | stor- |"™i4" oxid amined. sampled. | stor- | 73° ea 
a8e- |(As20s).| (CO2). || A5°- | Ase0s).| (CO2). 
CS—4 (25 pounds FS (75 pounds 
in hardwood 1920. Mos. | Perct. | Perct. in paper-lined 1920. Mos. | Per ct. | Per ct. 
barrel)-—<. -’.. - Aprsa (. 2. 0.14 4.54 veneer drum)..} Apr. 20 |..-.... 0. 04 1.91 
June 10 LY -19 4.45 June 10 5 by . 08 1. 85 
July 14 2.8 .15 4.37 July 14 Re .06 2, 94 
Aug. 14} 3.8 18 | 4.84 Aug. 14| 3.8 .07 | 3.62 
Sept.17] 4.9 -20} 4.57 Sept.17| 4.9 .07 | 2.75 
Oct. 15; 5.8 22 4.92 Oct. 15] 5.8 .05 | 3:36 
Nov. 17| 6.9 -25 {5.33 Nov. 17| 6.9 -10| 4.81 
Dee. 15| 7.8 -27 | 5.36 Dec. 15] 7.8 .07] 4.30 
iI 
1921. " ripest 1921. 
Jan. 15; 8.8 -25 5.32 | Jan. 15| 8&8 -10] 4.19 
Apr. 2] 11.4 -40 5.15 Apr. 2] 11.4 att 4,6 
July 1; 14.3 -42) 6.09 July 1| 143 .22| 5.54 
Oct. 1] 17.3 747 | 6.14 | Oct. Ul te3 "96 | 5,98 
} 
1922, 1922 
Jan. 2{| 20.4 54 6.08 | Jan. _2| 20.4 36 5.75 
CS-5 (25 pounds | FS-1 (25 pounds 1920. 
in en ve- 1920. || in metaldrum)| Apr. 20 |..-.--- . 05 2. 09 
neer drum)....| Apr. 20 |....... 17} 4,91 | June 10} 1.7 .@5;)', 1.72 
June 10} 1.7 16] 4.51 July 14} 2.8 -03 | 1.64 
July 14 2.8 20 4,54 Aug. 14 3. 8 05 1.74 
Aug. 14/ 3.8 217) 4.94 Sept.17; 49 -05 | 1.67 
Sept. 17 4,9 134 5. 40 Oct. 15 5.8 . 05 1, 88 
Oct. 15 5.8 be, 5.67. Nov. 17 6.9 . 05 1.70 
Nov. 17| 6.9 45] 5.72 Dec. 15| 7.8 -05 | 2.16 
Dec. 15| 7.8 46} 6,28- 
1921. 
1921. Jan. 15 8.8 205 1.79 
| Jan. 15 ars .46 6. 36 | Apr. °2] 11.4 . 03 1.98 
- Apr. 2] 11.4 46} 6.06 July 1) 14.3 .05 | 2.36 
July 1] 143 .45 6. 24 Oct... 1} 17.3 . 05 1.81 
Oct. 1 17.3 . 43 6. 07 . 
1922. 
} 1922 Jan. 2{| 20.4 05 1. 88 
Jan. “2'} 20.4 Soe 6.91 | 
CS-6 (25 pounds | FS-3 (25 pounds 
in paper-lined | 1920. || in paper-lined | 1920. 
veneer drum)..| Apr. 20 |_...... 15 4.39|| Sugar barrel)...| Apr. 20 |-.-...- - 06 2.01 
June 10} 1.7] .16| 4.24 June 10) 17] .08} 2.30 
July 14] 28 16 |. 4.24 | July 14] 2.8 .05 | 3.12 
Aug. 14 3.8 wlZ 4.62 Aug. 14 3.8 .07 3. 49 
Sept. 17 4.9 . 20 4.39 Sept. 17 4.9 - 09 3. 81 
Oct. 15 5.8 sain 4, 56 Oct. 15 5.8 - 10 4.53 
Nov. 17 6.9 . 24 5. 06 Nov. 17 6.9 15 5. 32 
Dec. 15 7.3 . 20 5. 44 Dee. .15 7.8 a 5. 62 
1921. 1921. 
Jan. 15 8.8 -25 5: oO Jan. 15 8.8 -25 5. 70 
Apr. 2) 11.4 .20} 5.29 Apr. 2| 11.4 .382| 5.61, 
July 1] 143 .39 | 5.59 July 1| 143 -34] 5.74 
Oct. 1 17.3 . 48 5591 Ochi t I 7-3 ~ a2 5. 68 
1922 1922 
Jan. 2] 20.4 54 5. 83 Jan. 2] 20.4 41 5. 62 
FT (100 pounds 
in unlined ve- 1920. FS-4 (25 pounds 
‘ neer drum)....)| Apr. 7 |..-...-. 00 1.40 in hardwood 1920. 
, May 4 9 -O1 1,44 barrel)... <cscab Apt. 20-}<5-2-- 05 2. 05 
June 10 2.1 . 03 1. 62 June 10 i Bye 05 1. 87 
July 14 3.2 . 03 1.65 July 14 2.8 -05 1. 88 
Aug. 14 4, 2 | . 03 1. 66 Aug. 14 3.8 -07 2. 00 
Sept.17| 5.3] .02] 1.83 Sept.17| 4.9 -06| 2.05 
Oct. 15 6.3 | - 02 1. 94 Oct. 15 5.8 - 05 2.04 
Noy. 17 7.3.4 . 02 2. 7> Nov. 17 6.9 - 08 2. 06 
Dec. 15 8.3 . 02 2. 38 Dec. 15 7.8 -05 2. 94 
3 Z 1921. 1921. 
Jan. 15 9.3 . 02 2.41 Jan. 15 8.8 . 06 2. 71 
Ape 27 1 Peo 2. 42 Apr. 2] 11.4 09 2. 38 
July 1| 147) .05 3. 97 July 1] 143 .05 2. 72 
Odt..—-1-}.-.17.8.)...04 3. 78 Oct. 1} 17.3 07 3. 04 
1922. 1922. 
4 Jan. 2! 20.8: #09 3.09 Jan. 2) 20.4 .07 3. 38 
