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render them absolutely worthless as to the pur- 

 pose of their creation. The worst feature of this 

 malady was the difficulty in destroying the pests. 

 Neither alcohol nor acids would affect them in 

 the least, and it was proved that they would live 

 for years in water, and become active as soon as 

 removed from the water. If they were thrown 

 out to decay and waste, the germs would so 

 contaminate leaves, if at all near them, that at 

 once the dread disease would be transmitted to 

 new fields to prey upon new subjects. So that 

 it was clearly proved that the only mode of 

 ending this dreadful disease was by fire; to burn 

 up everything that might in any way have been 

 tainted or contaminated by it. 



Worms affected by this disease were observed 

 to grow unequally, to become languid and lose 

 appetite, and often spots would appear on the 

 skin. This disease, like all others, was more 

 manifest in the fourth and fifth ages, than 

 the earlier ages. 



Another silkworm disease is "grasserie," or 

 jaundice. In this the worms become very yellow, 

 get soft and limp, and then finally die. 



Another disease is called " muscardine." This 

 sometimes proves very destructive. The worms 

 become languid, and suddenly die, and in a 

 short time become stiff and discolored. If they 



