But there _is_ a special provision.

The larynx is so elongated that it rises up into the posterior end of the nasal passage, and is thus enabled to give free entrance to the air for the lungs, while the milk passes harmlessly on each side of this elongated larynx, and so safely attains the gullet behind it.
Now, on the Darwinian hypothesis, either all mammals descended from marsupial progenitors, or else the marsupials, sprung from animals having in most respects the ordinary mammalian structure.

[Page 43] On the first alternative, how did "Natural Selection" remove this (at least perfectly innocent and harmless) structure in almost all other mammals, and, having done so, again reproduce it in precisely those forms which alone require it, namely, the Cetacea?
That such a harmless structure _need not_ be removed any Darwinian must confess, since a structure exists in both the crocodiles and gavials, which enables the former to breathe themselves while drowning the prey which they hold in their mouths.

On Mr.
Darwin's hypothesis it could only have been developed where useful, therefore not in the gavials( !) which feed on fish, but which yet retain, as we might expect, this, in them superfluous but harmless formation.
On the second alternative, how did the elongated larynx itself arise, seeing that if its development lagged behind that of the maternal structure, the young primeval kangaroo must be choked: while without the injecting power in the mother, it must be starved?
The struggle by the sole action of which such a form was developed must indeed have been severe! [Illustration: AN ECHINUS, OR SEA-URCHIN (The spines removed from one-half.)] The sea-urchins (Echinus) present us also with structures the origin of which it seems impossible to explain by the action of "Natural {44} Selection" only.

These lowly animals belong to that group of the star-fish class (Echinodermata), the species of which possess generally spheroidal bodies, built up of multitudinous calcareous plates, and constitute the order Echinoidea.