bstances.

I shall only add that Professor Yaeger's theory may be carried farther
yet. Each metal has also a certain taste and odour peculiar to itself;
in other words, they are also endowed with odoriferous substances. And
this may help us to explain the fact that each metal, when crystallizing
out of a liquid solution, invariably assumes a distinct geometrical
form, by which it may be distinguished from any other. Common salt, for
instance, invariably crystallizes in cubes, alum in octohedra, and so
on.

Professor Yaeger's theory explains further to us that other great
mystery of Nature--the transmission from parent to offspring of the
morphological speciality. This is another puzzle of the biologist.
What is there in the embryonal germ that evolves out of the materials
stored up therein a frame similar to the parents? In other words, what
is there that presides over the preservation of the species, working out
the miniature duplicate of the parents' configuration and character? It
is the protoplasm, no doubt; and the female ovum contains protoplasm in
abundance. But neither the physicist nor the chemist can detect any
difference between the primordial germ, say of the fowl, and that of a
female of the human race.

In answer to this question--a question before which science stands
perplexed--we need only remember what has been said before about the
protoplasmic scent. We have spoken before of the specific scent of the
animal as a whole. We know, however, that every organ and tissue in a
given animal has again its peculiar scent and taste. The scent and
taste of the liver, spleen, brain, &c., are quite different in the same
animal.

And if our theory is correct, then it could not be otherwise. Each of
these organs is differently constructed, and as variety of organic
structure is supposed to be dependent upon variety of scent, there must
necessarily be a specific cerebral scent, a specific splenetic scent, a
specific hepatic scent, &c. &c. What we call, then, the specific scent
of the living animal must, therefore, be considered as the aggregate of
all the different scents of its organs.

When we see that a weak solution of sulphuric acid is capable of
disengaging from the blood the scent of the animal, we shall then bear
in mind that this odorous emanation contains particles of all the scents
peculiar to each tissue and organ of the animal. When we further say
that each organ in a living animal draw