72 THE CULTURE 



iBaterials on which they were laid by th$ 

 moth. 



Some give as one mark of good eggs, 

 that they Should make a noife in cracking 

 them With your nail, and that the moi- 

 flure that comes from them lliould not 

 flow thin, but thefe are no certain figns. 

 Some are faid to kill good eggs by the 

 heat of the lire, in order to hinder the pron- 

 pagating them in other countries 3 and at 

 befl, it is to be feared that many who 

 make fale of them are not very careful of 

 the breed, but take them indifcriminately 

 from weak as well as flirong worms. Be- 

 fide the choice of good eggs, fome regard 

 is to be had to the climate in v/hich they 

 are to be rear'd, fo as to buy your eggs 

 from a country which enjoys nearly the 

 ikme degree of heat^ or if any dirlerence 

 is to be made, I v/ould rather buy them 

 from a country a fmall degree colder than 

 the one to which they are brought.' 



It is alfo to be obicrved, that you muft 

 not put miore eggs to hatch tlian you can 

 procure mulberry leaves to nouriiTi them 

 with J it is hard to give a rule for this i 

 three or four Iar.9;e trees, or about a dozen 

 pr fifteen fmali ones may feed about an 



ovmce 



