1.  They are at least six—­

Sight, which embraces space, and tells us by means of light, of the existence and of the colors of the bodies around us.

Hearing, which, by the motion of the air, informs us of the motion of sounding or vibrating bodies.

Scent, by means of which we are made aware of the odors bodies possess.

Taste, which enables us to distinguish all that has a flavor from that which is insipid.

Touch informs us of the consistency and resistance of bodies.

The last is genesiac or physical love, which attracts the sexes to each other, and the object of which is the reproduction of the species.

It is astonishing that, almost to the days of Buffon, so important a sense was misunderstood, and was confounded with the touch.

Yet the sensation of which it is the seat, has nothing in common with touch; it resides in an apparatus as complete as the mouth or the eyes, and what is singular is that each sex has all that is needed to experience the sensation; it is necessary that the two should be united to reach nature’s object.  If the taste, the object of which is the preservation of the individual, be incontestibly a sense, the same title must indubitably be preserved on the organs destined to the preservation of the species.

Let us then assign to the genesiac the sensual place which cannot be refused to it, and let us leave to posterity the assignment of its peculiar rank.

Action of the senses.

If we were permitted, even in imagination, to refer to the first moments of the existence of the human race, we would believe that the first sensations were direct; that is to say that all saw confusedly and indirectly, smelled without care, ate without tasting, etc.

The centre of all these sensations, however, being the soul, the sensual attribute of humanity and active cause of perfectibility, they are reflected, compared, and judged by it; the other senses then come to the assistance of each other, for the utility and well-being of the sensitive; one or individual.

Thus touch rectifies the errors of sight; sound, by means of articulate speech, becomes the interpreter of every sentiment; taste is aided by sight and smell; hearing compares sounds, appreciates distance; and the genesiac sense takes possession of the organs of all the senses.

The torrent of centuries rolling over the human race, has continually brought new perfections, the cause of which, ever active though unseen, is found in the demands made by our senses, which always in their turns demand to be occupied.

Sight thus gave birth to painting, to sculpture, and to spectacles of every kind.

Sound, to melody, harmony, to the dance, and to music in all its branches, and means of execution.

Smell, to the discovery, manufacture and use of perfumes.