Page:A Practical Treatise on Olive Culture, Oil Making and Olive Pickling.djvu/80

 civilized parts of the world, it will be readily understood why Columelle, Parmentier, and so many other famous agriculturists of past and present generations have called it "The first of all trees," and why the Italians, whose oil production exceeds that of any other country, have popularized the proverb that we should never tire repeating in California; "An olive plantation is a gold mine on the surface of the earth."