Poisonous Plants. 
63 
If the poisonous plant be an annual, i.e., reproducing 
jtself by seeds only, it may be eradicated by preventing the 
formation of the seeds by cutting the plants just above earth, 
between flowering and seeding. Biennial, and perennial 
plants are much more difficult to combat. These plants 
should be dug up with their roots, where practicable, but 
when the plants grow in boggy places, in small streams 
or ditches, it is best to fence these portions off by a wire fence, 
so as to prevent the access of the cattle to these places. If the 
water of streams is to be used as drinking water for the 
animals, a new bed should be dug in form of a semi-circle and 
the other portions may then be fenced off. The new portions 
should be watched to prevent the poisonous plants getting a 
foothold in it. 
To sum up the whole matter, owing to the well-known 
dangerous nature and rapid action of these vegetable poisons, 
and the great difficulty in applying appropiuate remedies, the 
farmer should grudge no labour or expense in eradicating from 
his farm every plant that is injurious, feeling that it will repay 
him to have the knowledge that his stock runs no risk 
whatever of deadly and costly poisoning accidents. 
H. T. Giissow. 
The Laboratory, 
44 Central Hill, Norwood. 
