Xll INTRODUCTION. 



we have no rain at the time of feeding, no storms, no shocks of elec- 

 tricity ; nothing to disturb the worms or create any disease. On the 

 contrary, we have everything to prevent it ; as you all know, through- 

 out the summer we have a blue sky, with any amount of sunshine, 

 from morning till night ; it is just there where our force and superior- 

 ity is ; because our mulberry trees, growing constantly under the in- 

 fluence of the sun's rays, produce healthy leaves, and consequently, 

 healthy food, making healthy worms. But the leaves must be given 

 fresh to the worms ; otherwise, if they are allowed to remain in heaps, 

 and get fermented or heated, the mephitic air that they contain in 

 that state would poison the worms. Therefore, it is very easy to un- 

 derstand that our superiority is on account of our constant sunshine ; 

 and as in other countries, their trees are growing nearly without it, in 

 a damp and wet atmosphere, this cause creates the disease there. 



