1792- •« mathematics. 171 



Cotton stockings have supplanted linen thread 

 stockings completely, and begin to be worn by many 

 people who wore only silk before. This alone is a 

 vast branch for which the twisted yarn of the ma- 

 chines is remarkably fit : some of it for stockings is 

 made as fine as ninety hanks to the pound weight. 



The African trade is supplied with a great deal 

 of coarse Britifii cotton goods made to imitate the 

 Indian. 



Yarn of various kinds are spun with the water 

 machines: a pound of some thread requires eiglity 

 days to be spun with one spindle, and a pound of the 

 coarser kinds only three days. Put the most profit is 

 gotten from spinning the middling kinds. 



It is to be observed, that cotton cloth can be bleach- 

 ed at a fourth of the expence and time required for 

 bleaching linen of the same fiaenefs. 



N.B. The above written in the ysar 1784. 



ON MATHEMATICS. 

 Sir, To the Editor of the Bee. 



■»■ ENJOY much pleasure in perusing your papers, and 

 would long before this have attempted to contribute 

 my aid in promoting the succefs of your laudable un- 

 dertaking, but besides being much employed, I was 

 very diffident of any thing I wiflbed to communicate ; 

 this prevented me from testifying my approbation, 

 or uniting my feeble efforts to vary the entertain- 

 ment and add utility to the performance. 



The design of rendering the Bee useful to the 

 t^Iergy, for the reasons afsigned, makes it a channel of. 



