^^ HINTS TO MANUFACTURERS. Sept. 2X. 



■which they may be applied. Cotton wool is fine, fliort, and 

 comparatively unelaflic ; and in order to make the thread ad- 

 here, and have the proper degree of ftrength, it is neceflary it 

 ftiould be twilled much harder tlian it is proper for wool in 

 alnioft any cafe to be, and Co much harder than fuits fome 

 purpofes, that it has been found fome yarn fpun in that way 

 cannot be properly employed for the purpofes intended. Slack- 

 nefs of twine is, in particular, necell'ary in all thofe woollen 

 goods that are to be fubjecled to the operation of fulling, with- 

 out which they do not felt, or cover well, in the technical lan- 

 guage of the manufaflurer. As wool, however, is longer than 

 cotton, fo much twift is not required, even for making the yarn 

 of that fort ftrong ; and, therefore, in the operation the ma- 

 chine fliould be fet to twift much lefs for wool than cotton, and 

 the whole mode of drawing the thread fliould be carried on in 

 a different manner. Hence it muft neceflarily follow, that ia 

 the firft attempts to make yarn of wool in this way, if the per~ 

 fons be employed who had been accuftomed to fpin cotton, they 

 will perform the operation in an imperfeft and improper man- 

 lier, fo as to make the yarn much worfe than they would be 

 able to do after a little praflice had enabled them to difcoverthe 

 proper mode oi vianipulation for that purpofe. But though it 

 fliould be found that it is difficult, or evenimpoffible, to fpin wool- 

 len yarn by machinery fo flack as is necelTary for the perfeftion 

 of many kinds of work, that circumftanoe ought not to prove 

 any bar to the ufe of machinery ; fori fhall fliow, in a fucceed- 

 ing number of this Mifceliany, that, by an apparatus extreme- 

 ly fimple, and certain in its operation, yarn may be untvyifted 

 to any degree that fliould be judged proper in the operation of 

 reeling, at next to no expence. In this way, it is alfo probable, 

 that machine fpun yarn could be made more equal in its tex- 

 ture, and even more loofe and open in the thread, than can be 

 done by any other mode of fpinning that has been yet invent- 

 ed ; and that of courfe it will anfwer better for the purpofe of 

 making; cloth, and other fabrics which require to be fulled to 

 make them over -well^ than by any other mode of fpinning that 

 has been hitherto pratVifed. 



Manufadurers who have hitherto attempted to fpin wool by 

 machines, complain likewife that they find it impoffible to draw 

 the thread in this way as fine as can be done by hand. This is 



