Professor James Ritchie, D.Sc. (Professor of Natural History in the University of Aberdeen): 'Sport and Commerce take a Hand in the Game '
(From Aberdeen)

Even the wild creatures of our countryside have their own alien problem. Professor Ritchie deals here with various aspects of that problem. Some of the commonest species-the rabbit and the grey squirrel, for example - were first imported to these shores in the interests of commerce, but have rapidly turned into pests. The common brown rat, a by-product of commerce, is definitely an 'undesirable.' Other creatures, such as the pheasant and the red-legged partridge, were imported and bred for sport, and have, so to speak, been allowed to take out papers of naturalization.