"The utilisation of waste paper, fells of sewer rodents, human excrement possessing chemical properties, in view of the vast production of the first, vast number of the second and immense quantity of the third, every normal human being of average vitality and appetite producing annually, cancelling byproducts of water, a sum total of 80 lbs. (mixed animal and vegetable diet), to be multiplied by 4,386,035, the total population of Ireland according to census returns of 1901." (U17.1701)