MANURE. 151 



Vegetable ( Benzoate > ) 



Salts \ Acetate, > Of potash, soda, lime. 

 £ Oxalate, 3 



Animal C Urate of ammonia, 

 Salts. I Lactate of ammonia, 



Oxides of iron, manganese, and silica. 



In a word, are found in animals, the inorganic 

 parts of soils, the elements of silicates, united with the 

 inorganic acids which existed in the soil, added to 

 the organic, produced by the animal itself. These 

 salts are common to animals and plants, but except 

 in bones, they form only a small part of the living 

 body. 



217. In plants there are certain principles, as al- 

 bumen and gluten, so like animal products, that they 

 have received the name of vegeto-animal. But 

 very late discoveries have proved that they are iden- 

 tical with the fibrin and albumen of animals. That 

 these animal and vegetable products, are modifications 

 of a principle called protein, has been alluded to, 

 page 85. The late analyses of these various pro- 

 ducts shed a clear light over the multiform substan- 

 ces, from the animal kingdom, used for manure. 

 They show, how like products arise from the decom- 

 position of plants, and thus assimilate animal and 

 vegetables in the process of forming composts. 



Fibrin, or the basis of flesh, or muscular fibre, al- 



