FOOTNOTES:
[181] Storer's 'Agricultural Chemistry,' vol. I. p. 496.
[182] Scott's 'Manures and Manuring,' p. 19.
CHAPTER VIII.
GUANO.
Importance in Agriculture.
In the consideration of artificial manures, guano deserves the first place. This it does mainly on historical grounds, as it is now largely a manure of the past. Not merely has it been used in agriculture to an extent to which no other artificial manure has as yet ever approximated, but its influence on agricultural practice has been enormous. Introduced into this country about the middle of the present century, it was the first of artificial manures to be used in large quantities.[183] It may be thus described as having introduced the modern system of intensive cultivation, and given rise to the now almost universal practice of artificial manuring.