201 
The ferrous sulphate and potassium ferrocyanide were dissolved sep¬ 
arately, a pint to a pint and a half of water being used in each case 
When the two chemicals were completely dissolved they were poured 
together and enough water added to make 2 gallons. Prepared in this 
way the solution is of a blue black color. 
(4) Copper borate mixture. 
Cupric sulphate. 
Borax (sodium borate) 
Water. 
5.22 grams. 
13. 00 grams 
7, 572 grams 
0.184 ounce. 
0.458 ounce. 
2 gallons. 
This solution was prepared in exactly the same way as the last. It 
was pale blue in color and could scarcely be seen when applied to the 
leaves of plants. 
(5) Ferric chloride solution. 
Ferric chloride 
Water. 
0.24 gram... 
7, 572 grams 
0. 254 ounce. 
2 gallons. 
The ferric chloride was simply mixed with water, the resulting solu¬ 
tion being of a deep orange color. 
(6) Ferrous sulphate solution. 
Ferrous sulphate (oxsiccatus). 
AVater. 
30.42 grams. 
7, 572 grams. 
1.073 ounces. 
2 gallons. 
A simple solution made by dissolving the ferrous sulphate in water. 
(7) Cupric ferrocyanide mixture. 
Cupric sulphate. 
Potassium ferrocyanide. 
Water. 
0. 184 ounce. 
11. 90 grams. 
0.4197 ounce. 
7, 572 grams. 
2 gallons. 
% 
The cupric sulphate and potassium ferrocyanide were dissolved 
separately, each in about a pint and a half of water. When poured 
together a thick paste-like, chocolate-brown precipitate is formed. 
This, when diluted with water gives a walnut-brown mixture. 
(8) Cupric hydroxide mixture. 
Cupric sulphate. 
5.22 grams.. 
0.184 ounce. 
0. 082 ounce. 
2 gallons. 
Potassium hydrate. 
2. 34 grams. 
AVater. 
7, 572 grams. 
This was prepared similarly to Bordeaux mixture, which it resembles 
somewhat in color and chemical composition. 
(9) Potassium sulphide solution. 
Potassium sulphide (liver of sulphur).. 
AVater. 
28.34 grams 
7, 572 grams 
0.999 ounce. 
2 gallons. 
