OF SILK. 245 



and round ; io as to appear in fome niea- 

 fure twiftcd. 



Mr.. Vaiicanfon mentions a further ufe of 

 winding in the crofs : which is that it fliews 

 on which fide the fpinner ought to add 

 frefli filk-pods in order to keep the two 

 threads of equal flrcngth and thicknefs : 

 he juftly obferves that keeping always the 

 fame number of filk-pods will not pre- 

 ferve the fame thicknefs in the thread 5 for 

 the fnigle thread of one pocl that is but a 

 little winded off, may be as thick and 

 ftrong as two, three, or more that are al- 

 molt exhaufted -, but the crofs which is 

 next to the flop-wire will, as foon as ei- 

 ther thread grows weaker than the other, 

 *fwerve towards the fide of the flron^er 

 'thread, and thus give notice that fome filk- 

 pods are to be added to the other fide. 



But I mud obferve that this fwerving of 

 the crofs, to either fide, will not happen 

 unlefs the hooks of the wooden ring, over 

 which the threads pafs be kept in a pofi- 

 tion horizontal, and alfo each hook on the 

 fmie fide with that ftop-wire from which 

 its own thread proceeds 5 and, tho' Mr. 

 Vaiicanfon mentions this as a method of 

 keeping each thread to the fame thicknefs 

 R 3 with 



