%2 Mechanical Fabrication tf Lint end Hatt. 



able <3ifFcrence between the two expenditures, in the two fituations of the tube. For wlien 

 :the end AC was pufhed into the interior part of the refervoir, the full tube afforded, in 8i feconds, 

 the fame quantity of water as was furniflied in 80 feconds, when it was applied to the fide of 

 the veflel. It may be prefumed, that if the part A C had more perfedly pofleffed the form of 

 the contraded vein, this flight difference of one fecond would have difappeared*. 



0« the Mechanical Fabrication of Lint, and the ManufaBure of Hats. By N. L, 



To Mr. NICHOLSON. 



O. 



SIR, 



'N the fubjefl: of drefling lint, by engines, the refult of my inquiries is the following :-«-It 

 was attempted by a Mr. John Swan, of Whitehaven, Cumberland : the objedion made againfl 

 it was, that it broke the lint : could any of your correfpondents, in that part of the country, 



• obtain a drawing or model of the-machine ; as it may be very likely fome alteration in it might 

 accomplifli the purpofe ? On the other fubje<Slof inquiry — Hats, a Mr. Saxton, 45 and 46, Queen* 

 ftreet, Southwark, is concerned with a houfe in the country, who makes hats with engines, 

 but where he may poflibly inform, I do not know myfclf. Meffrs. Davis, Welts, and Martin, 

 late of Stockport, now fomewhere in Kent, make ufe of engines for plaiting hats. There is 



^fo, I underftind, another company at Stockport, names unknown, who ufe engines to make 

 foldiers' hats: how far might all thefe be improved, fo as to complete the procefs ? Hats are 

 divided into three fort", felts, thofe made of plain wool, cordies, cordebacks, writ cordies, thofe 

 covered or otherwHe wkh codies wool (wool flript from the Ikins of thofe lambs that die in 

 yeaning, called by the Scotch, mort wool) ; and the third fort is called fluff, Caroline, or caftor- 

 hats, that is, hats covered with beaver, or beaver and hares' wool mixed : how did the fecond 

 fort, cordies, obtain that name ? The reafon, I have heard, js, they were firfl made in a town of 

 France, whofe name comes near that this kind of hat has obtained: if fo, what town is it? 

 Why are the third fort called Carolines ? Thefe queflions may be thought, at firfl, trifling ; but 

 when the hiflory of a manufaftory, from its origin, is fought for, it fometimes happens that 

 the various names of the article, in queftion, lead us to the difcovery. Mafters, in general, are 

 divided about the ufe of galls in their dying : it would be weH, if a regular plan could be adopted 

 for the proportion of ingredients, whether of wool or fluff ; for this we mufl look up to the 

 chemifts of the prefent day. Allow me to afk them a queftion, in the refolving of which, 

 the dye-houfes in the country, are much interefted. By what mixture of ingredients, do the 

 London dye-houfes obtain a black cdour fo much fuperior to thofe of the country^ Dr. 



• Here concludes the interefting refearches of Citizen Venturi on fluids. At the end of his publication he has 

 given a fliort fummary of the contents, which, on account of the length of this concluding part, I fliall defer 

 to the next number. I take this opportunity cf announcing, that Mr. Taylor, bookfeller in Holborn, has ap. 

 plied to me for perraiffion to reprint the tranflation from this Journal, and that it will accordingly appear in 

 the form of an oflavo pansphlet. 



Aikifl, 



