506 Agricultural Chemistry. — Pig Feeding. 



These Tables of the actual amounts of the increase in live 

 weight produced, and of the fresh food or its constituents con- 

 sumed, furnish a complete account of the chemical statistics of 

 the experiments, and provide a basis for any further calculations ; 

 and it is only as serving these purposes, that we have given them 

 in detail in these Tables. We shall find, indeed, that the influence 

 of the composition of the food, upon its consumption, and its 

 productiveness, will be more clearly brought out in the Tables 

 which next follow (XXII., XXIII, XXIV, XXV,, XXVI., 

 and XXVII, ), in which the actual results of Tables XIX., 

 XX., and XXI. are brought by calculation, to a more convenient 

 and uniform standard of comparison. 



We have also endeavoured to arrange some of the more impor- 

 tant indications of these six Tables (XXII-XXVII. inclusive), 

 in the form of Diagrams ; which, with the necessary explana- 

 tions, will be found at the end of the Paper ; and, it is thought, 

 that a careful inspection of them, will materially facilitate a clear 

 conception of the general bearing of the results. A glance even 

 at the Diagrams will show, how very much greater is the varia- 

 tion in the proportion of the Nitrogenous constituents, consumed 

 in the different pens by a given weight of animal within a given 

 time, or which is required to produce a given amount of in- 

 crease, than is that of the iVoTZ-nitrogenous, or of the Total 

 Organic substance. 



