“ The experiments on cattle, sheep and pigs dealt with the quantity of food consumed in relation to a given weight of animal in a given time; the quantity consumed to produce a given amount of increase in live weight; the proportion, and relative development, of the different organs or parts of animals; the composition of the animals in different conditions as to age and fatness; the composition of the manure in relation to that of the food consumed; the yield of milk in relation to the food required to produce it ”

“ The author wrote:—"If the evidence of the Rothamsted experiments up to the present time has not established beyond all cavil that practically the source of the whole of the nitrogen in our crops is the store within the soil itself, and the nitrogenous manures brought upon it, there can be little doubt that in the course of their future progress they will afford conclusive evidence on this point." ”

“ Incidentally there came up for consideration such important questions as the sources in the food of fat produced in the animal body, the characteristic demands for nitrogenous or non-nitrogenous constituents of food in the exercise of muscular power, and the comparative characters of animal and vegetable foods in human dietaries. ”