BEAUTY AND BRAIN
It has been stated already that, anatomically considered, the forehead is not a part of the face but of the cranium. From an artistic and popular point of view, however, the forehead is a part of the face, and a most important one. Modern taste fully endorses the ancient law of facial proportion, which makes the height of the forehead equal to the length of the nose, and to the distance from the tip of the nose to the tip of the chin. “Foreheads villainous low” are objectionable, because associated with a vulgar unintellectual type of man, and too vividly suggestive of our simian ancestors. Foreheads abnormally high, though preferable to the other extreme, displease, because they violate the law of facial proportion. We excuse them in men, because they are commonly expressive of intellectual power. But in women a high forehead is always objectionable, because it gives them a masculine appearance. Hence Romantic Love, which cannot exist without sexual contrasts, and which aims at making woman a perfect embodiment of the laws of Beauty, eliminates girls with too high foreheads. Yet at the command of Fashion thousands of maidens deliberately prevent men from falling in love with them by combing back their hair and giving their foreheads a masculine appearance, instead of coyly hiding it under a fringe or “bang.”
The fact that the feminine forehead, though more perpendicular than the masculine at the lower part, slants backward in its upper part in a more pronounced angle, is another reason why women should cover up this part of their forehead, which Sexual Selection has not yet succeeded in moulding into perfect shape. For the receding forehead is universally recognised as a sign of inferior culture. Everybody knows what is meant by Camper’s facial angle, which is formed by a horizontal line drawn from the opening of the ear to the nasal spine, and a perpendicular line touching the most prominent parts of the forehead and front teeth. In adult Europeans Camper’s angle rarely exceeds 85 degrees. The average in the Caucasian race is 80°; in the yellow races 75°; in the negro 60° to 70°; in the gorilla 31°. In antique Greek heads the angle is sometimes over 90°. Says Camper: “If I cause the facial line to fall in front, I have an antique head; if I incline it backwards, I have the head of a negro; if I cause it to incline still further, I have the head of a monkey; inclined still more, I have that of a dog, and, lastly, that of a goose.”
It appears, however, that this angle has more value as a test of beauty than as an absolute gauge of intellect. Generally speaking, there is no doubt a correlation between a bulging forehead and a superior intellect; but individual exceptions to this rule are not infrequent. Nor is it at all difficult to account for them. For intellectual power does not depend so much on the size and shape of the skull as on the convoluted structure of the brain.
Our brain consists of two kinds of matter—the white, which is inside, and the gray, which covers it. The white substance is a complicated telegraphic network for conveying messages which are sent from the external gray cells. It has been proved, by comparing the brains of man and various animals, that the amount of intelligence depends not so much on the absolute size of the brain, as on the abundance of this gray matter. And, what is of extreme importance from a cosmetic point of view, the gray cells are increased in number, not by an addition to the absolute size or circumference of the brain, but by a system of furrows and convolutions which increase the surface lining of the brain without enlarging its visible mass. For the benefit of those who have never seen a human brain, it may be very roughly compared to the convoluted kernel of an English walnut.
Wherein lies the æsthetic significance of this mode of cerebral evolution? It prevents our head from becoming too large. Have you ever considered why infants appear so ugly to every one but their mothers? One of the principal reasons is that their heads are twice as large in proportion to the rest of the body as those of adults. A child’s stature is equal to four times the height of its head, an adult’s to eight heads. If our heads continued to grow larger as our minds expanded, from generation to generation, all the proportions of human stature would ultimately be violated. But thanks to the peculiar mode of cerebral evolution just described, Romantic Love may continue to “select” in accordance with our present standards of beauty, without thereby favouring the survival of lower intellectual types.
This view of the question also solves a difficulty which has staggered even such a leading evolutionist as Mr. Wallace, viz., the fact that the oldest prehistoric skulls that have been found “surpass the average of modern European skulls in capacity.” But if it is the easiest thing in the world to find an ordinary stupid man in our streets with a larger skull than that of many a clever brain-worker, why should we attach so much importance to those prehistoric skulls? Had their brains been examined, they would doubtless have been found as scantily furrowed as those of a big-headed modern anarchist.