O F S I L K. 159 



will find the advantage of them ; fince, 

 as I mentioned before, the more any place 

 is adapted to the fize and figure of the 

 fiik-ball, the lefs filk will be wafted in fiofs 

 and ufelefs web ; befides that the worms 

 will more quickly fet about, and finifli 

 their balls. 



With thefe therefore, or any branchy 

 materials, you may fill up the partitions of 

 your arbours ; oblerving flill to leave the 

 arches clear and open, fo that you may 

 readily thrufl in your arm, and feed your 

 worms that are plac'd under them, which 

 muft be fupplied with leaves, moderately, 

 till they climb up among the branches to 

 fpin. 



I have fald that, whatever materials you 

 make ufe of, in forming thefe arbours, they 

 fhould be very dry, and clean j for frefh 

 branches with the fap in them are not pro- 

 per, nor fliould there be any leaves on 

 them, for thefe would fo flick among the 

 flofs filk of the balls as to render it ufelefs; 

 it is befl therefore to cut the branches of 

 broom in winter, and have them dry'd a- 

 gainft fummer, for broom, on account of 

 its pllablencfs, is very convenient for form- 

 ing thefe arbours, the flruclure of which 



I have 



