In the lowest vertebrates and in the homologous tissues of the higher invertebrates, the fractions of the thyroid are intimately connected with the ducts of the sexual organs.

Most remarkable is this method of blood supply for it is exceedingly common among the invertebrates and rare among the vertebrates.

Adrenalin, that weapon of a gland tracing its ancestry back to the begetter of the brain itself, for brain and adrenal gland both have evolved from the small nerve ganglia of the invertebrates, would have backed up to the hilt his argument, which he had to elaborate on the indirect grounds of analogy and induction.

In the invertebrates, who date further back in the history of the planet than any vertebrate, the nervous system consists of discrete patches of nerve cells, the ganglions composing the ganglionic system of which the vegetative or autonomic nervous system of man is the direct descendant and representative.

In the first place, there is the fascinating story of the origin of vertebrates from invertebrates of the sea scorpion or spider type.

Wagner was greatly over-estimated, in her opinion; she asked for invertebrate music, the free harmony of the passing wind.

Somehow we felt that the daughter of the New England parson was speaking, not the child of the invertebrate Southerner.

They used to try 'em all, big and little, wild and domesticated, mammals and invertebrates.

She has no vital parts, such as France has in Paris or Germany has in Silesia or Westphalia, upon which the life of the whole State organism depends; she is like some vast multi-cellular invertebrate animal which it is possible to wound but not to destroy.

He was working at philosophy and getting up before the sun to make experiments on the susceptibility to light of the invertebrates; by way of studying English and politics at the same time, he was translating Mr. Disraeli's speeches; then every Sunday he accompanied Monsieur Hébert's pupils on their geological excursions in the environs of Paris, while at night he gave lectures to working men on Italian painting and political economy.

But this tradition has failed to produce the beginnings or promise of any new phase of civilised organisation, the growths have remained largely invertebrate and chaotic, and, concurrently with its gift of splendid and monstrous growth, it has also developed portentous political and economic evils.

A considerable proportion of people, men no less than women, are born invertebrate, and they must got on as they best can.

HEGNER, JANE Z. Invertebrate zoology.

SEE Hegner, Robert W. HEGNER, ROBERT W. Invertebrate zoology.

The invertebrates: Protozoa through Ctenophora.

Progress of invertebrate life.

The invertebrates: Protozoa through Ctenophora.

Progress of invertebrate life.

Backbones are called by the Wise Men vertebrae; animals that have backbones are named Vertebrates; and animals that lack backbones are named Invertebrates.

" "Tell us the names of some Invertebrates, please, Doctor," said Rap.

"Well, all sorts of insects are Invertebrates, and so are lobsters and crabs, oysters and clams, worms, starfishes, jelly-fishes, corals, and even sponges.

But never mind about Invertebrates now.

Indeed, in reading even great poetry, is one not sometimes sadly aware, as in the case of Shelley or Swinburne, that the logical sequence of thought is loose and indeterminate, and that this is concealed from one by the reverberating beat of metre, which gives a false sense of structure to a mood that is really invertebrate?

BALANOGLOS`SUS, a worm-like marine animal, regarded by the zoologist as a possible connecting link between invertebrates and vertebrates.

CREATIN, a substance found in the muscles of vertebrate animals, but never in invertebrate.