S*6 DIGESTION, SECRETION, &c. SECT. XXXVII. *, 



cedonc in Cornwall. Other means of adhefion ace 

 produced by heat and preffure, as in the welding. 

 of iron bars ; and other means by fimple preffure, 

 as in forcing two pieces of caoutchou, or elaftic 

 gum, to adhere ; and lafrly, by the agglutination of 

 a third fubftance penetrating the pores of the other 

 two, as in the agglutination of wood by means of 

 animal gluten. Though the ultimate particles of 

 animal bodies are held together during life, as welt 

 as after death, by their J'pecifie attraction of cohe- 

 fion, like ail other matter; yet it does not appear, 

 that their original organization was produced by 

 chemical laws, and their production and- increafe 

 muft therefore only be looked for from the laws of 

 animation. 



II. When the pain of hunger requires relief, cer- 

 tain parts of the material world, which furround ; 

 us, when applied to our palates, excite into action 

 the mufcles of deglutition ; and the material is 

 fwallowed into the ftamach. Here the new aliment 

 becomes mixed with certain animal fluids, and un- 

 dergoes & chemical procefs, termed digeftion; which 

 however eherniftry has not yet learnt to imitate out 

 of the bodies of living animals or vegetables. This 

 procefs feems very fimilar to the facchasine proeefs 

 in the lobes of farinaceous feeds, as of barley, when 

 it begins to germinate; except that, along with 

 the fugar, oil and mucilage are alfo produced; 

 which form the chyle of animals, which is very 

 fimilar to their milk. 



The reafon, I imagine, why tBis chyle -making, 

 or faccharine proeefs, has not yet been imitated by 

 chemical operations, is owing to the materials be- 

 ing in fuch a fituation in refpect to warmth, moif- 

 ture, and motion ; that they will immediately change 

 into the vinous or acetous fermentation ; except 

 the new fugar be abforbed by the numerous lac- 

 teal 



