he amount of haemoglobin is almost
doubled. I do not call this thing a force; I call it an
intelligence--the intelligence that pervades the body and all animate
nature, and does the right thing at the right time. We, no doubt, speak
too loosely of it when we say that it prompts or causes the body to do
this, or to do that; it _is_ the body; the relation of the two has no
human analogy; the two are one.

Man breaks into the circuit of the natural inorganic forces and arrests
them and controls them, and makes them do his work--turn his wheels,
drive his engines, run his errands, etc.; but he cannot do this in the
same sense with the organic forces; he cannot put a spell upon the pine
tree and cause it to build him a house or a nursery. Only the insects
can do a thing like that; only certain insects can break into the
circuit of vegetable life and divert its forces to serve their special
ends. One kind of an insect stings a bud or a leaf of the oak, and the
tree forthwith grows a solid nutlike protuberance the size of a
chestnut, in which the larvae of the insect live and feed and mature.
Another insect stings the same leaf and produces the common oak-apple--a
smooth, round, green, shell-like body filled with a network of radiating
filaments, with the egg and then the grub of the insect at the centre.
Still another kind of insect stings the oak bud and deposits its eggs
there, and the oak proceeds to grow a large white ball made up of a kind
of succulent vegetable wool with red spots evenly distributed over its
surface, as if it were some kind of spotted fruit or flower. In June, it
is about the size of a small apple. Cut it in half and you find scores
of small shell-like growths radiating from the bud-stem, like the seeds
of the dandelion, each with a kind of vegetable pappus rising from it,
and together making up the ball as the pappus of the dandelion seeds
makes up the seed-globe of this plant. It is one of the most singular
vegetable products, or vegetable perversions, that I know of. A sham
fruit filled with sham seeds; each seed-like growth contains a grub,
which later in the season pupates and eats its way out, a winged insect.
How foreign to anything we know as mechanical or chemical it all
is!--the surprising and incalculable tricks of life!

Another kind of insect stings the oak leaf and there develops a pale,
smooth, solid, semi-transparent sphere, the size of a robin's egg, dense
and succulent like the flesh