74 



Journal of the Department op Agriculture. 



eradication of " Canada Thistle " on grazing lands is taken from the 



New Zealand Department of Agricnlture " Leaflets for Farmers " : — 



" Any measures preventing the plant from developing leaves 



will be effective. The following have been thoroughly tried : Cnt 





the thistles down close to the ground — if a large patch use a scythe — 

 then dose the ground well with a solution of arsenic, carbolic acid, or 

 other poison. The wash from sheep dips will do, or even a liberal 

 dressing of common salt. Repeat the treatment if possible as soon as 



