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MISCELLANEOUS PAPERS. 



ftands as a fentm^l over the fire, and preferves an equal 



ilegree of heat. 



That this will be the efFedof the machine, I can atteft, 



having ufed it for more than a year. 



It is fubmitted to the curious, whether this madilne 



r ^^ 



might not be ufefully applied, ift, to regulate the heat of 

 chymical and alchymical furnaces, where long digeftions, 

 and a uniform degree of heat are required; 2dly, in the 

 making of fleel, and in burning of porcelain ware, in 

 which a due regulation of the fire is of great importance; 

 ^dly, in green or hot houfes, and in apartments for hatch- 

 ing chickens, according to the Egyptian method. With 

 a little alteration it might be applied to the purpofe of 

 opening doors, windows, and other pafTages, for a draught 

 of air^ and thereby preferve a due temperature of the air 

 in hofpitals, &c, 



4n Account </ /2 M A C H I N E/c?r pumping Veffel 



ofM? 



Well 



J 



N the courfe of the immenfe trade now purfqed on 

 ^^ the ocean, veflels are continually fubjed to leaks, 

 which too often prove fatal to the crews, who, wearied 



out with inceffant pumping, are obliged, at laft, to fubmit 



to their unhappy fate, and defponding fink into their wa- 

 tery graves. It is therefore much to be defired, that fome 

 method could be fuggefted for preferving the lives of fo 

 intrepid and ufeful a fet of men. What has occured to me 

 on this fubjed, I beg leave to lay before the Society, and 

 flatter myfelf, it will not prove altogether unworthy of 



notice. 



When a veffel fprlngs a leak at fea, which cannot be 

 dlfcovered, inftead of exhaufting the crew with continual 

 working at the pumps, they may form* with very little 

 trouble, a machine to difcharge the water, which will work 

 itfelf, without any alEflance from the hands on board. 



Let 



V 



