both a result and a cause of certain things. As the inheritance of a fighting ancestor it is the result of millions of years of fighting in prehistoric times, and, like any other over-developed part or organ, it has an intense urge to express itself. This inherent urge is what makes the owner of that jaw "fight at the drop of the hat," and often have "a chip on his shoulder."

Natural Selection

¶ Thus, because every external characteristic is the result of natural laws, and chiefly of natural selection, the vital traits of any creature can be read from his externals. Every student of biology, anatomy, anthropology, ethnology or psychology is familiar with these facts.

Built to Fit

¶ Man's organism has developed, altered, improved and evolved "down through the slow revolving years" with one instinctive aim—successful reaction to its environment. Every part has been laboriously constructed to that sole end. Because of this its functions are marked as clearly upon it as those of a grain elevator, a steamship or a piano.

Survival of the Fittest

¶ Nature has no accidents, she wastes no material and everything has a purpose. If you put up a good fight to live she will usually come to your rescue and give you enough of whatever is needed to tide you over. If you don't, she says you are not fit to people the earth and lets you go without a pang. Thus she weeds out all but the strong—and evolution marches on.

Causes of Racial Characteristics

¶ This inherent potentiality for altering the organism to meet the demands of the environment is especially noticeable in races and is the reason for most racial differences.

Differences in environment—climate, altitude and topography necessitated most of these physical differentiations which today enable us to know at a glance whether a man belongs to the white race, the yellow race, or the black race. The results of these differentiations and modifications will be told in the various chapters of this book.

Types Earlier than Races

¶ The student of Human Analysis reads the disposition and nature of every individual with ease regardless of whether that individual be an American, a Frenchman, a Kaffir or a Chinaman, because Human Analysis explains those fundamental traits which run through every race, color and nationality, according to the externals which always go with those traits.

Five Biological Types

¶ Human Analysis differs from every other system of character analysis in that it classifies man, for the first time, into five types according to his biological evolution.

¶ It deals with man in the light of the most recent scientific discoveries. It estimates each individual according to his "human" qualities rather than his "character" or so-called "moral" qualities. In other words, it takes his measure as a human being and determines from his externals his chances for success in the world of today.

These Rules Work

¶ Every rule in this book is based on scientific data, has been proved to be accurate by investigations and surveys of all kinds of people in all parts of the world.

These rules do not work merely part of the time. They work all the time, under all conditions and apply to every individual of every race, every color, every country, every community and every family.

Through this latest human science you can learn to read people as easily as you read books—if you will take the little time and pains to learn the rules which compose your working alphabet.

Do What We Want to Do

¶ It is easy to know what an individual will do under most circumstances because every human being does what he wants to do in the way he prefers to do it most of the time. If you doubt it try this test: bring to mind any intimate friends, or even that husband or wife, and note how few changes they have made in their way of doing things in twenty years!

Preferences Inborn

¶ Every human being is born with preferences and predilections which manifest themselves from earliest childhood to death. These inborn tendencies are never obliterated and seldom controlled to any great extent, and then only by individuals who have learned the power of the mind over the body. Inasmuch as this knowledge is possessed by only a few, most of the people of the earth are blindly following the dictates of their inborn leanings.

Follow Our Bents

¶ In other words, more than ninety-nine per cent of all the people you know are following their natural bents in reacting to all their experiences—from the most trivial incidents to the most far-reaching emergencies.

"Took It" From Grandmother

¶ The individual is seldom conscious of these habitual acts of his, much less of where he got them. The nearest he comes is to say he "got it from his father" or "she takes it from grandmother." But where did grandmother get it?

Man No Mystery

¶ Science has taken the trouble to investigate and today we know not only where grandmother got it but what she did with it. She got it along with her size, shape and structure—in other words, from her type—and she did just what you and everybody else does with his type-characteristics. She acted in accordance with her type just as a canary sings like a canary instead of talking like a parrot, and just as a rose gives off rose perfume instead of violet.

This law holds throughout every species and explains man—who likes to think himself a deep mystery—as it explains every other creature.

The Hold of Habit

¶ Look around you in shop, office, field or home and you will find that the quick, alert, impulsive man is acting quickly, alertly and impulsively most of the time. Nothing less than a calamity slows him down and then only temporarily; while the slow, patient, mild and passive individual is acting slowly, patiently, mildly and passively in spite of all goads. Some overwhelming passion or crisis may speed him up momentarily but as soon as it fades he reverts to his old slow habits.

Significance of Fat, Bone and Muscle

¶ Human Analysis is the new science which shows you how to recognize the slow man, the quick man, the stubborn man, the yielding man, the leader, the learner, and all other basic kinds of men on sight from the shape, size and structure of their bodies.

Certain bodily shapes indicate predispositions to fatness, leanness, boniness, muscularity and nervousness, and this predisposition is so much a part of the warp and woof of the individual that he can not disguise it. The urge given him by this inborn mechanism is so strong as to be practically irresistible. Every experience of his life calls forth some kind of reaction and invariably the reaction will be similar, in every vital respect, to the reactions of other people who have bodies of the same general size, shape and structure as his own.

Succeed at What We Like

¶ No person achieves success or happiness when compelled to do what he naturally dislikes to do. Since these likes and dislikes stay with him to the grave, one of the biggest modern problems is that of helping men and women to discover and to capitalize their inborn traits.