INSECT PESTS

New Zealand Times, Volume XLVII, Issue 10812, 31 January 1921, Page 10

INSECT PESTS

AND SCIENTIFIC CONTROL. INTERESTING LECTURE BY DR TILLYARD. ' (Special to the "Times.") Dr R. J. Tillyard had a large audience of scientists and laymen at the Science Congress in Palmerston North to hear him lecture on “The Scientific Control of Insect Pests. ’ Insects, he said, took toll of from 15 to 20 per cent, of the world’s vegetable foods, and if the entomologists could save half of a quarter of that percentage the study was deserving of the support ot the whole world. The Americans were the leaders in this science and the speaker paid a warm tribute to the results they had already a'chieved. There were two important methods of prevention of the spread of the insect nests—(l) hydrocyanic acid gas and carbon bisulphide had been proved a most effective fumigator, and (2) spraying. A close study of the latter method was made in U.8.A., and tljeir methods had reached a very high state ot perfection. Thev "had been largely employed in controlling the little insects which, if allowed to flourish, would eventually defoliate whole forests. In this connection the strength of the solution did not app9ar to be of such importance as the force with which it wa* ejected from the spray. Another way of controlling blights was by letting the insects natural enemies deni with them. The lecture was ilhahxtej by some excellent slides. - - owners’ ideas of value, and the bulk was passed it. \ WALRARAPA FARMERS’ 00.-OP. ASSOCIATION. There was the usual attendance of buyers. but bidding was irregular. Price® for sheepskins were on a par with previous, sale; heavy ox hides were weaker; medium ox and cow hides showed a slight improvement; calfskins were higher, t specially superior and medium to good lines, the advance on the latter amounting qj: tinqes to 2d per lb. Tallow weak. DALGETY AND COMPANY. Although a fair number of exporters, tanners and feUmongers were represented the market was lifeless and many lots were passed in. Sheepskins were on a par with the rates ruling at last sale. Good sound ox and cow hides showed an advance of Id on last sale. Tallow was in poor demand and good cask lots failed to elicit a bid. MURRAY, ROBERTS AND CO. \Ve offered 1100 hides and calfskins and 4800 sheepskins at the last sale. There was a good attendance of buyers, hut bidding lacked spirit. Dry sheepskins wore easier by a halfpenny per ponnd. while salted were also easier. Hides showed a decline.of jd to id per pound in sound lots, and the infeinor and damaged up to Id per pound. Calf, however, slightly improved in. price. Tallow was considerably weaker, with limited demand