Abstract

The biological interrelations between plants and animals are so close that from the very early days when half civilised man gave up his hunting and predatory habits for a settled lifo and began to grow crops and tend cattle, the various lower forms of life associated with these early possessions of primeval man also became his life-long companions for weal or woe. Gradually, during ages of civilisation as man began to clear wild jungle and grow different crops in large areas for his food, Clothing and other comforts, his relations directly and indirectly with lower forms of life became more and more pro- nounced. Every one of us farmer farmer is more or less of the casual relations existing between man and lower animals from

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