CO'STON-WOOL. 429 



Appendix. 



QUESTIONS put to the MAKER of WHITNEY'S 

 SAW-GINS, with his ANSWERS thereto. 



1st. How do they use or put into motion Whitney's 

 cotton saw-gin ? 



1st. By a leathern band on the whirl on the saw-cylinder. 



2d. Can any idea be given of the proper rate of speed ? 



2d. From two hundred to two hundred and fifty revo- 

 lutions in one minute. 



3d. Should the trough be kept nearly full of uncleaned 

 cotton whilst at work, or what proportion is best? 



3d. The trough should be kept even full all the time. 



4th. How many hands are employed at once upon one 

 gin? 



4th. One hand is all that is necessary lO put the cotton 

 into the trough. 



5th. How much can be cleaned by one gin in a day ? 



5th. About nine hundred pounds clean cotton per day. 



6th. Can several gins be moved at the same time by the 

 same power. 



6th. Yes ; but most of the gins here are carried by horse 

 power, and not more than one is carried by two horses, 

 and that is done by a large cog-wheel. 



Columbia, 9th December 1829. 

 (United States.) 



