CAMPBELL (48) has carefully studied this method of erad- 

 icating the wild mustard and wild radish found in 

 grain fields. 



SPRAYING MACHINES 



" In the experiments made by me in 1898, a knapsack sprayer 

 was used, and it was then evident that a larger machine would 

 be necessary. To meet the demand Messrs. Strawsons, 71A, 

 Queen Victoria Street, London, E. C, adapted one of their 



potato sprayers to the work. In addition, they made a special 

 and cheaper sprayer, which can be attached to an ordinary 

 cart, and is capable of covering a breath of rather more than 

 twenty feet. 



Illustration No. 1 pictures this machine at work. 



The pump is attached to an ordinary parraffin barrel, and 

 is worked by an operator standing in the cart. In the larger 

 machine the pump is geared with the traveling wheels. 



