f 



236 



M A N U R E S. 



Sect. X. 9. 4. 



3' A 



ftill more effedual method of difTolving hard vegetable and 

 limal fubftances, and rendering them nutritive, might be bjdio-eft^ 

 g them for fome time in water raifed to a much greater heat than 



that of boiHng 



dio^efter 



o 



m 



hich 



red h 

 fhell. 



and 



d 



anim 



This is to be done in a clofe velfel, called Papin's 



it is faid, that the confined water may be made 



then dilTolve hair, horns, hoofs, bones, tortoife- 



al, and perhaps many vegetable matters : which 



might thus facilitate their decompofition for the purpofes of manures 

 or for the nutriment of many animals ; and might even contribute tc 

 ) food of mankind in times of fcarcity. This veflel fhould be mad< 



of 



dof 



d fhould have an oval opening at top, with an oval 1 

 iron larger than the aperture. This lid fhould be flipped in endways, 

 when the vefTel is filled, and then turned, and raifed by a fcrew above 



There fhould 

 be or hole covered with a weighted valve to pre- 



conta<ft with the under edges of the aperture 



alfo be a fmall 



the danger of burfting the digefter 



4 



Oth 



ght be rendered more eafily digefl 



and 



thence more nutritive to animals, and perhaps to plants, by mech 

 trituration as well as by cookery ; 



f th 



labour and 



expence 



the grinding of graffes, flraws, and farinaceous feed 



powder between mill-flon 



which have been called the arti 



ficial teeth of fociety. It is probable, that fome foft kinds of wood 



nd into powder, and efpecially when they have undergone a kind 



to deflroy 

 or horfe 



of ferm 



and become of loofe 



ac^rimony, mi 



or boiled 



I 



be 



dered ufeful food for fw 



and even for mankind in times of fam 



Nor is it improbabl 



that hay, which has been kept In flacks, fo 



undergo the faccharine procefs, may be fo managed by grindin 

 and by fermentation with yeafl like bread, as to ferve in part for the 



Dr. Prieflley 



fuflenance of mankind 



in times of 



great fcarcity 



gave to a cow for fome time a flrong infufion of hay in large quantity 



for her driuk, and found, that fhe produced during this treatment 



above 



V 



