1920] 
DUGGAR—INSOLUBLE SALTS IN BALANCED SOLUTIONS 325 
TABLE III—Continued 
Concentration Pu 
Cult. Total | Gr. wt. | Gr. wt 
No. Salts used gr. wt. | tops | roots 
I I e ST p rt Fin. 
1.0 gm. 1.0 gm. Ca;(PO4); | 
1.0 gm. | 1.0 gm. | Ferric citrate 1 18.02| 11.97 | 6.05 | 8.3| 7.9 
11 40 cc. | 20cc. | MgS0,+7H:0 m 17.31] 9.86 | 7.45 8.0 
40 cc. | 20cc. | KNO; J 
1.0 gm. | 1.0 gm. | Cas(PO4); | 
.5 gm.| .5 gm. | FeC:0,+2H:0 1 3.48| 2.12| 1.36 | 0.2| 7.5 
12 40 cc. | 20cc. | MgSO,4-7H;O m 7.12| 3.67 | 3.45 7.6 
40 cc. | 20 ec. 3 i 
5gm.| .5 gm. | CaHPO,4-2H;O | 
.5gm.| .5 gm. | FePO,--4H;O 31.87] 7.72| 4.154 0.0] 7.6 
13 40 cc 20 cc. | MgSO,+-7H:O n 10.00| 6.83 | 3.17 7.5 
40 cc. 20 cc. 
5 gm. 5 gm. | CaHPO,+2H:0 
1.0 gm.| 1.0 gm. | Sol. ferric phosphate "E 2.97| 2.07 .90 | 7.9| 7.9 
14 40 ec. | 20cc. | MgSO,+7H m 10.67| 7.19 | 3.48 7.8 
40 cc. | 20cc. | KNO; | 
5 gm. 5 gm. CaHPO,--2H;O0 | 
1.0 gm. | 1.0 gm. | Ferric citrate 1 35.80] 22.63 | 12.67 | 8.1| 8.0 
15 40 cc. | 20cc. | MgS0,+7H:0 | n 18.55| 11.13 | 7.42 | 7.3| 7.9 
40 cc. | 20cc. | KNO; Í 
.5 gm. | .5 gm. | CaHPO,+2H:0 | 
.5 gm. | .5 gm. | FeC:0,+2H:0 1 8.80| 5.99| 2.81 | 6.7| 7.9 
16 40 cc 20 cc. | MgSO,--7H:0 n 13.14 09 | 6.00 7.8 
40 cc. | 20 cc 3 | 
.0 gm. CaCO; | 
trace FeSO, 
17 | .5gm Mg;(PO,)2+8H:0 1 6.62] 4.20| 2.32 | 7.8] 7.9 
40 cc. KNO; J 
1.0 gm. | 1.0 gm. | Cas(PO,)2 ] 
5gm.| .5 gm. | CaSO¿+2H:0 
18 |1.0 gm. | 1.0 gm. | Sol. ferric phosphate ( | 1 25.55| 16.82 | 8.73 | 8.0| 7.9 
.5 gm. .5 gm. Mgs(PO,):+8H:0 
40 cc. | 20 cc. | KNO: 
5 gm. CaHP0,+2H:0 
5 gm. CaSO, +2H:,0 
19 | 1.0 gm. Sol. ferric phosphate ( | 1 18.99} 12.58 | 6.41 | 7.8! 8.0 
<5 gm. Mgs(PO,)2+8H:0 
40 cc KNO; 
