Mai/ 2, 190S.] Agricultural Gazette of JV.S.W. 413 



the air, pass across miles of country, usually taking the direction of the wind, 

 and avoiding timbered stretches when settHng again. 



Experiments to destroy the younger stages. 



At Trangie several parts of the district were visited, and with the assist 

 ance of Messrs. McDowell, J. 1). Bnyd, and Rev. W. G. Sharpe, some experi- 

 ments were made with kerosene emulsion and poisoned baits. A spray of 

 1 gallon kerosene to 5^ gallons water with 1 11^. hard soap was tried on 

 patches of grasshoppers about half grown, and which destroyed about 50 i)er 

 c^nt. of them. While the younger ones were readily destroyed, many older 

 specimens were noticed to eventually recover from the effect of this contact 

 S|)ray. Strong soap and water was also found to destro}^ num'ers of the 

 smaller specimens. The insects are at once incapacitated as they becon e 

 wetted by the spray, and it may be considered from the results obtaine 1 that 

 kerosene enudsion applied on the patches of young hopper not later than 

 thi'ee weeks after hatching, and before they have become too scattered, would 

 be effective. 



A kerosene emulsion made from the following formula is recommended: — 



Kerosene ... ... ... ... ... 1 gallon 



Soft soap ... ... ... ... ... 2 lb. 



Water ... ... ... ... ... 10 gallons. 



The kerosene and soap shoukl be well emulsified in two or three gallons of 

 hot water before adding the rest of the water. 



Poisoned bait, consisting of Paris green and bran mixed in the jDro^ioi tioii 

 of 1 to I'l and made into a mash with water sweetened with treacle, whs 

 spread at the edge of a cultivation paddock, and destroyed numbers of the 

 hoppei'S. As the bait dries it is less attractive to the grasshoppers. 



Visiting Coonamble, experiments were made with Mr. McKenzie, Calga 

 .Station, with an emulsion of Little's Dip (a carbolic sheep-wash), as follows: — 



Little's Sheep Dip ... ... ... 1 gallon 



Soap ... ... ... ... ... 3 lb. 



Water ... ... ... ... ... 20 gallons. 



This destroyed the hoppers as soon as they were wetted by the spray, though 

 it was found in the case of some of the larger hoppers that they recovered 

 from the wash, though rendered helpless for hours by the film of oil and soap. 



The results of these exj^eriments show that there are certain stfiges when 

 the liojipers may be destroyed by the use of the above-mentioned sprays. 



Fig. 2 represents the stage and size when these sprays can be effectively 

 applied. 



Jtage too old for contact ynhik^jt^AtSwL.- -^jP*wirr^\_^ Stage when contact 



spraying. ^.Ji""^' '^ ...-'--— ■-'--■^, - , spraying effective. 



Fig. 3 represents a stage when the wing-pads are developed, which is too 

 old foi' the best results from spraying. 



