Ultimately the food of every living creature depends upon the vegetables kingdom, and although all plant food isn't her-baceous, it is remarkable that so many of the staple foods of both man and his domesticated animals are simply herbs -the grasses, wheat, barley, oats, rice, maize and the pulses, and on these depend not only bread, but milk, butter, cheese and eggs. The oil-producing olive tree has played such an important part in the history of our early ...