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only substance which, while not injuring the plant, 

 will render it unfavourable as a host to the fungus of 

 the potato disease. M. Louis Sipiere has recommended 

 to the French Academy of Science that lysol, an 

 alkaline liquid, prepared in Germany by the saponifica- 

 tion of cresols, should be used as a remedy for vine 

 disease. If this disease is checked by it there is little 

 doubt that the potato disease would be also. M. 

 Sipiere's private trials have not yet been confirmed by 

 public tests, but if they are there will be a gain in the 

 discovery. As used in the proportions he recom- 

 mends, it is 28 per cent, cheaper than the Bouillie 

 Bordelaise. Other advantages are its easy solubility 

 in water, and consequent simplicity of preparation for 

 use. The quantities he recommends are 1,000 parts of 

 water to four parts of lysol by measure, or five parts to 

 1,000 by weight. 



Other Diseases of the Potato. 

 Several other diseases cause injury to the potato 

 crop, but collectively they do not work so much devas- 

 tation as the disease. The reason why the various 

 diseases attack the crops so persistently, and more 

 frequently than when the plants are growing under 

 natural conditions, is doubtless due to some extent to 

 the fact that when grown in large quantities the germs 

 of diseases readily find a suitable host to attack; 

 whereas, when the plants are isolated, the germs stand 

 a much greater chance of not meeting with a plant 

 suitable to attach themselves to, and finding no food 



