2406. The liberations of the nerves are combinations with the other anatomical systems at the spot where they have attained their highest evolution.
2407. Each system, however, has its peculiar process. Through the reception or adoption of the systems into the nervous system, a peculiar sensation must therefore originate.
2408. Peculiar sensations are sensations of sense.
2409. The combinations of the anatomical systems with the nervous system, whereby the former have been subordinated to the latter, are consequently sensorial organs, or organs of sense.
2410. In the sensorial organs the processes of the several systems attain unto sensation. They are brains of the anatomical systems.
2411. There are as many senses as there are different anatomical systems, and consequently senses belonging to vegetative and animal life.
2412. The number of vegetative systems is 3; the vascular, intestinal, and pulmonary system.
2413. The most complete combination of the vascular with the nervous system is the integument—constituting the tegumentary sense, or sense of feeling.
2414. The most complete combination of the intestinal system with the nerves is the tongue—intestinal or gustatory sense.
2415. The most complete combination of the lungs with the nerves is the nose—pulmonary or olfactory sense.