OCR Text |
Show Useful ParasUes Today the economic use of parasitology para-sitology Is world-wide; at Farnham house there is a catalogue of 60,000 parasites, with Information about their habits, hosts, and the countries where they are found. Instantly available for use by the governments of the empire. A timber pest was recently despoiling the forests of Canada. A suitable parasite was sought and found In the forests of Europe. In 1032 the laboratory shipped to Canada 3,:00 cocoons of that parasite. Last year the exports exceeded four million presumably with correspondingly large benefits to the Canadian timber. The time may come when, so far ns Its Insect friends nnd enemies are concerned, economic vegetation throughout the world will be completely under the control of man. Manchester (Eng.) Guardian. |