XXXIV APPENDIX. 



(D. p. i*.) 



A Threshing Machine, upon Col. Anderson's plan, was 

 erected in Maryland, in 1792, and answered well; hut after 

 sometime the wheel warped, and impeded its perfect opera- 

 tion. The absence of the inventor, and want of confidence in 

 the owner of the machine, or want of energy, occasioned its 

 being laid aside. 



Besides Col. Anderson's plan, Mr. Hoxie, of Hudson, N. Y. 

 and Mr. Deneale, of Virginia, obtained patents for Threshing 

 Machines, but they have not been successful in introducing 

 them. In 1S02. Mr. D. Prentiss, from Edinburgh, erected six 

 or seven, in Pennsylvania, Delaware, and New Jersey, on the 

 Scotch principle, which answered well; but they required 

 more care than common labourers would bestow in feeding the 

 machine to prevent its choking; and as common workmen could 

 not repair it when out of order, and the maker was at a dis- 

 tance, they did not multiply. Mr. P. also engaged in another 

 line of business. 



The advantages of Threshing Machines are, 1. The enabling 

 the possessor to take advantage of a sudden rise in the mar- 

 ket for grain. 2. The more complete cleansing of the grain from 

 dust and smut, than by the flail. 3. Rendering the straw more 

 eatable by stock, in consequence of the bruising it undergoes in 

 beating out the grain: and if mixed with fresh cured clover 

 hay, it will more readily absorb the moisture in if, than when 

 the grain is threshed by the flail, and thus add greatly to the 

 stock of winter provender for cattle. 



(E. p. 16.) 



A gentleman of Philadelphia informs me, that taking the 

 hint from an account of the practice of burning clay, which 

 he read in a foreign journal, he has directed an experiment to 

 be made on his land, at Port Penn, of burning marsh- mud, 

 with a view of using it as a top-dressing for grass and grain, 

 and as the water at that place is brackish, and that kipd of 



