204 THE CULTURE 



N. B. The chief reafon for placing this 

 cloath againft the wall is, that the red 

 liquor which the moth throws out may 

 not fall upon the cloath. If the moths 

 do not cling well to it, but fall in crowds 

 to the bottom ; it is then beft to fpread 

 it on a table. 



CHAP. IX. 



On the breed of Silkworms degenerating. An 

 experiment propped to be tried, in order to 

 hinder it. Another experiment of curio- 

 Jity propofed for tryal, 



^' O M E French authors fay, that it is 

 neceffary to renew the breed of filk- 

 worms every four or five years by eggs 

 brought from other countries that are 

 warmer or more natural to the worms, as 

 from Spain and Sicily to France and Italy y 

 and that without this renovation the breed 

 will degenerate in four or five years. It 

 may however be fufpe6i:ed, that much of 

 tliis degeneracy is owing to perfons not 

 being careful to raife their breed from a 

 healthy and ftrong flock, according to the 



rules 



