From the animal kingdom: When food has been converted into chyle, the blood-vessels extract from it their blood, the nervous fibres their juices, and the substances which are the origins of fibres, their animal spirit.

From the vegetable kingdom: A tree with trunk, branches, leaves and fruit is supported by its root, by which it draws from the ground a grosser sap for the trunk, branches and leaves, a purer for the fleshy part of the fruit, and the purest for the seeds within the fruit.

From the mineral kingdom: In certain places in the bowels of the earth, there are mineral ores, impregnated with gold, silver and iron; and from exhalations hidden in the earth gold, silver and iron derives each its own element.