124 ARTIFICIAL REMEDIES FOR 



in all other crops which are liable to be attacked by the 

 malady, and all these measures should be employed in the 

 spring. 



REMEDIES AGAINST PROPAGATION. 



(484.) The different varieties of potatoes are now dis- 

 eased in most situations, and we have found that the malady 

 is continued in future growths of the same individual. To 

 prevent the propagation of the disease, without respect to 

 a repetition of the cause, we have but to use sets from 

 former perfectly undiseased plants, and unless the insect 

 again appear, the plant which grows from such sets will 

 be healthy. 



(485.) As the attack of this creature operates principally 

 by causing deficiency of the solid materials of the plant, 

 we ought, if we desire to check the disease, to do every- 

 thing in our power which conduces to the generation of 

 fibre. 



(486.) With this object in view, the plant should not be 

 encouraged to throw out large succulent shoots in its early 

 growth, but should rather throw out dry and arid shoots : 

 in fact, the sort of treatment which would render other 

 plants strong and fibrous would probably tend to render the 

 potatoe sound. 



(487.) I should be inclined to try the experiment of 

 using but small portions of the potatoe for sets, such as 

 scooped eyes, or potatoe peelings, although Marshall has 

 ascertained, that, under ordinary circumstances, the crop 

 is thereby materially lessened. These means would only 



