Elements of Physiophilosophy

by Lorenz Oken

2466. In the oral cavity, however, the glands of the intestinal canal are repeated. The salivary glands secrete fluid, like the pancreatic glands.

2467. The sense of feeling is present in all animals. They are only animals by virtue of it; but the sense of taste appears to be first formed at a later period, after the intestine has separated from the integument; in the animals that have no intestine, its existence is problematical, and even in Fishes and Birds it is but poorly developed.

3. Pulmonic or Lung-sense.

2468. When the respiratory organ is hoisted up into the head, and there becomes an organ of sensation, it passes over into a sense.

2469. That the nose is the thorax, together with its viscera, repeated in the head, has been already remarked. The many convolutions of the turbinated or olfactory bones correspond to the ramifications of the trachea; the nasal cartilages to the tracheal or laryngeal rings; the olfactory membrane to the pulmonic vesicles.

2470. The process of the lungs repeated in the head becomes smell, like that of the intestine became taste. The olfactory sense is the highest blossom of the arteriose vascular system or the branchial net. On this account the olfactory membrane is the most delicate, and the densest tissue of arteries and veins.

2471. The nose is related to the mouth, as the thoracic is to the abdominal cavity; the olfactory membrane to the tongue, as the lung is to the stomach. It is a cephalo-thorax. The nose is not therefore so completely closed as the mouth, but is opened through the two most anterior air-holes or spiracula. The nasal apertures or nostrils are the last persistent remnants of the spiracula, after all those upon the sides of the body have been closed up.

2472. It is the last organ of sense, which has been evolved from the trunk. It is therefore nobler than the two others, and has also a nobler object, the air.

2473. The nerves of the olfactory organ are peculiar to it, and are encephalic nerves. As the sense of smell is the pulmonic or arteriose sense; so also does the arteriose substance of the brain combine with this organ. The olfactory nerves consist of cineritious or gray substance, and are only prolongations thereof.

2474. This is the only phenomenon of the kind met with among all nerves, but it is commensurate with the character or signification of this organ. A sensible pulmonary organ can only have arteriose nerves. As the liver is throughout venous, so is the nose throughout arteriose in quality.