
674 New York AaricutturaL Experiment Station. 
4. Ammoniacal copper carbonate solution : 
Cupric basic carbonate (copper carbonate) ......... grams 7.03 ~ 
Water (added to make the carbonate into a thin 
DAO) ES Fo NU ite ee punt RAR Cen beck erecta ee ane ne en c. c. 50.00 | 
Aqua ammonia 26 B. (stronger water of ammonia), c. ¢. 150.00 
Af Tie) eae RUA PLIEMR TONEY Oe ROM WADA Saye GSS, gallon 1.00 — 
The carbonate wet up with water is allowed to stand a few 
minutes to become thoroughly wet before the ammonia is added. 
5. Cupric ferrocyanide mixture: | 
Cupric sulphate (bluestone) ...............00 cece grams 14.90 
Potassium ferrocyanide (yellow prussiate of potash), grams 22.35 
PV ILC BRS Ned ey duis thie: atid ive Pitch BSL CaS poe atte a gallon 1.00 
6. Cupric heart black mixture : Ned 
Cupric sulphate (bluestone) .................0.040% grams 14. 90 
Potassium hydrate (caustic potash) ............... grams 14.90 
VIET 0G ssi. Hs eho diy ehoakle aly y ieteele Ale tales « Gia toes ec gallon 1.00 
(The cupric sulphate and potassium hydrate are dissolved each 
in one quart of water, and after mixing are allowed to stand — 
until black before diluting.) 
7. Cupric hydroxide mixture :* 
Cupric sulphate (bluestone) ............0cceeeeeee grams 14.90 
Potassium hydrate (caustic pray ay cos Soe grams 29.80 © | 
Waller see melee ii i 4 Ane Cet eee gallon 1.00 
Prepared as No. 6, but put on before turning black. 
8. Cupric hydroxide mixture :* | 3 : 
Cupric sulphate (bluestone) ........ de ee “grams 14.90 
Potassium hydrate (caustic potash)............... grams 26. 82) 8 
VA TOR Wai) ve idk 0 alee a eave Bate Utes oe gallon 1. 00. ia 
i 
Prepared precisely as No. 7. 4 
hy 
* These two mixtures do not differ essentially, because of a miscalculation in the amounts of — he 
KHO added. Intended to have been 14.90: 7.45 not 14.90: 29. 80, and 14.90: 8.27 not 14.90: 26.82. 

