lypi* HINTS TO MANUFACTURERS. 73 



evidently owing to a circumftaiictf, that admits of being eafily 

 remedied by the apparatus I fliall defcribe. Wool being longer 

 in the ftaple than cotton, requirdi to be lefs twlfted during 

 the time of dra'wing the thread; but wliere a long thread is 

 drawn at once from the rove, it becomes, in fome meafure, ne- 

 ceflary to twift it a good deal to make it draw equally. But 

 the filaments of wool, on account of their greater lennth, as has 

 been faid, entangle with each other much looner tiian thole of 

 cotton, fo as to fhop the thread in its progrefs, and prevent it 

 from being drawn at one operation, nearly to the fame finenefs 

 with cotton. To obviate this evil, it mud be neceffary, either 

 to twift the thread much lefs during the operation, or what 

 will anfwer the purpofe ftill better, to rove the wool twice, (/. e.) 

 after the thread has been drawn to that finenefs it will admit 

 of by the ordinary operation of the machine, to draw it over, 

 a fecond time, to a greater degree of finenefs. But without the 

 untwifting machine this would be altogether imprafticable, as 

 the filaments of the wool are, by the twift, fo compaiflly join- 

 ed together, that they could not be feparated till the twift be 

 again taken off, and the thread fo much opened in its texture 

 as to admit of the filaments being drawn out to a greater 

 length by a fecond, or even by a third operation. By means 

 of the apparatus I am to defcribe, this can be done in an eafy 

 and efieftual manner ; fo that there is no reafon to doubt, but 

 that wool may thus be fpun to the utmuft degree of finenefs of 

 which it is fufceptible, and probably to a much oreater finenefs 

 than ever could be doae by hand alone, at the fame time that 

 it might have all the flacknefs that could be wanted. By the 

 fame means, there is no doubt but cotton wool may be fpun to 

 a greater degree of finenefs than, it has been pollible bitherio to 

 attain ; fo that 1 make no doubt, when this fimple apparatus 

 iliall be generally adopted, we will be able to produce finer 

 muflins than ever India afiorded, if we take care to obtain the 

 fineft cotton wool; and much finer fabrics of wool than ever 

 yet has been known. 



It is fcarcely neceffary here to remark, becaufe every manu- 

 facturer of wool knows it, that it is of great confcquence for the 

 fine fpinning of wool, that it be kept in a very confiderable de- 

 gree of heat during the whole operation^ as if it be cold, the oil 

 \^ol. V. K 



