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617 



juices by 



are 



th 



means of 



eafing the growth and preser 



fbpporting the life both of vegetables and animals. All animal 

 bodies require a continual fupply of food, from whence both by a 

 chemical and mechanical operation juices are extrad:ed ; which are 

 aflimilated as much as poffible to thofe contained in the body, and 

 i^ndered nearly homogeneous to its conflituent parts ; thefe juices 



r 



circulate in the form of blood througli the body, and gradually form 



a fecretion of various parts, conftantly depofiting iufenrible atoms 

 of matter, replacnig continually thofe atoms which are inceffantly 



1 



wafted by perfpiration, and fridlion, by labour, walking. See. Thefe 

 atoms depolited by the blood and other juices are analogous to thd 

 mixtures contained in the various fubftances employed as food ; if 

 therefore the acid particles prevail in the nourifhment, it is an acidu- 

 lated diet -, if the phlogifton is moft copious, it yields a phlogijitc 

 diet, and if the abforbents and alkalies preponderate it becomes an 

 alkaline diet. Health depends partly on thejuft medium or 



VATION 



IF MARI 

 NERS. 



mix- 



between the 



diets : for according 



tl 



quality of the 



diet prevails in the food, fo muft the juices be changed which arc 

 circulating in the body, and which afterwards conftitute the folids. 



the body become too crifp and 



If the acids prevail, the fibres of the 

 much inclined to convuljive Jymptoms ; if the phlogifton becomes too 

 copious, inflammatory and eruptive difeafes may be apprehended, and 

 if the alkaline parts are the chief ingredients of our food, putrid 



4 ^ difeajes 



