"Purplish red" Quotes from Famous Books
 ... ferro-cyanide of potassium, obtained at a drug store. A few drops of this mixture will disappear if the lime is equal or in excess of the copper sulphate, that is, it will be neutralized, but if it is not, they will remain a bright purplish red. Bordeaux mixture is used in strengths varying from three to five pounds each of bluestone and lime in fifty gallons of water, but the former is ...
— Apple Growing • M. C. Burritt |
