SUPPORTED BY STAB' ; j KTC. 



143 



pected from the identity of its composition with that 

 ofstarch; it also consisting of carbon, with hydrogen 

 and oxvgen in the proi^rtions to form water. Sugar, 

 when not taken in too large quantities, must be con- 

 sidered a wholesome food, particularly as supplying 

 material for keeping up the heat of the body. Some 

 authors have condemned it, because animals would 

 not thrive on it alone; but this is no argument at all. 

 The same result would follow feeding upon any other 

 single article, to the exclusion of all others. The 

 animal requires and must have a mixed food, or it 



will V. ■ . 



ft. i i oily substances have the same lunction 



to perlorm; they also consist of carlwn, hydrogen, 

 and oxygen, and, in animals that do not eat ve- 

 getables, are undoubtedly the chief i<^h 

 carbon is supplied to the lungs. VVh- »at 

 from various parts of the body is first used to support 

 1. II : hence results the remarkable emaciation 

 V i)uars after long abstinence, or during star- 



valioa. 



Fat is extremely useful in the body for various pur- 

 poses. It lubricates ai! '^»s- 

 cles,and the tendons, s(. 1 '75 

 it tills up hollows, making the bo. <i, 

 instead of angular and full of ' '•^^. 

 as it would otherwise be. This v nart ot the 

 ;, • • ■ V .lerivetl from tin >..., aiul tatty sub- 

 !. It seerns clear that, under certain 



I do pro- 

 1,1 ' *od con- 



•ists entirely of \ 

 apples. Still we ^ 

 contain most oil, fatten animals quickest^ 



a. Indian corn is an instance of this : linseed cake 

 is a still more striking one. Such fooil not only aHH 

 plirv ' ' liiily waste of the b<xly, but caOM 

 an .> and increase of fat. The natiml 



