Perception is of course manifest in all persons. But it varies greatly in degree and power. Moreover, it may be developed and cultivated to a great degree. As Perception is an interpretation of the impression of the senses, we often confuse the cultivation of Perception with the development of the senses themselves. Two persons of equally perfect sense of sight may vary greatly in their degree of Perception of sight impressions. One may be a most careless observer, while the other may be a very close observer and able to distinguish many points of interest and importance in the object viewed which are not apparent to the first observer. Cultivation of Perception is cultivation of the mental background of the senses, rather than of the sense organs themselves. The Perception accompanying each sense may be developed and cultivated separately from that accompanying the others.

The majority of persons are very careless observers. They will see things without perceiving the qualities, properties, characteristics, or parts which together make up those things. Two persons, possessed of equal degrees of eyesight, will walk through a forest. Both of them will see trees. To one of them there will be but trees perceived; while to the other there will be a perception of the different species of trees, with their varying bark, leaves, shape, etc. One perceives simply a "pile of stone," which to the perception of another will be recognized as granite, marble, etc. Brooks says: "Very few persons can tell the difference between the number of legs of a fly and of a spider; and I have known farmers' boys and girls who could not tell whether the ears of a cow are in front of her horns, above her horns, below her horns, or behind her horns." Halleck says of a test in a schoolroom: "Fifteen pupils were sure that they had seen cats climb trees and descend them. There was a unanimity of opinion that the cats went up head first. When asked whether the cats came down head or tail first, the majority were sure that the cats descended as they were never known to do. Anyone who had ever noticed the shape of the claws of any beast of prey could have answered that question without seeing an actual descent. Farmers' boys, who have often seen cows and horses lie down and rise, are seldom sure whether the animals rise with their fore or hind feet first, or whether the habit of the horse agrees with that of the cow in this respect."

Brooks well says: "Modern education tends to the neglect of the culture of the perceptive powers. In ancient times people studied nature much more than at present. Being without books, they were compelled to depend upon their eyes and ears for knowledge; and this made their senses active, searching and exact. At the present day, we study books for a knowledge of external things; and we study them too much or too exclusively, and thus neglect the cultivation of the senses. We get our knowledge of the material world second-hand, instead of fresh from the open pages of the book of nature. Is it not a great mistake to spend so much time in school and yet not know the difference between the leaf of a beech and of an oak; or not be able to distinguish between specimens of marble, quartz, and granite? The neglect of the culture of the perceptive powers is shown by the scholars of the present time. Very few educated men are good observers; indeed, the most of them are sadly deficient in this respect.... They were taught to think and remember; but were not taught to use their eyes and ears. In modern education, books are used too much like spectacles, and the result is the blunting of the natural powers of perception."

The first principle in the Cultivation of Perception is the correct use of the Attention. The intelligent control of voluntary attention is a prerequisite to clear and distinct perception. We have called your attention to this matter in the preceding chapter. Halleck says: "A body may be imaged on the retina without insuring perception. There must be an effort to concentrate the attention upon the many things which the world presents to our senses.... Perception, to achieve satisfactory results, must summon the will to its aid to concentrate the attention. Only the smallest part of what falls upon our senses at any time is actually perceived."

The sense of sight is perhaps the one of the greatest importance to us, and accordingly the cultivation of Perception with regard to impressions received through the eye is the most important for the ordinary individual. As Kay says: "To see clearly is a valuable aid even to thinking clearly. In all our mental operations we owe much to sight. To recollect, to think, to imagine, is to see internally,—to call up more or less visual images of things before the mind. In order to understand a thing it is generally necessary to see it, and what a man has not seen he cannot properly realize or image distinctly to his mind.... It is by the habitual direction of our attention to the effects produced upon our consciousness by the impressions made upon the eye and transmitted to the sensorium that our sight, like our other senses, is trained." Bain says: "Cohering trains and aggregates of the sensations of sight make more than any other thing, perhaps more than all other things put together, the material of thought, memory and imagination." Vinet says: "The child, and perhaps the man as well, only knows well what is shown him, and the image of things is the true medium between their abstract idea and his personal experience." This being the case, advice concerning the Cultivation of Perception must needs be directed mainly to the cultivation of the perception of sight-impressions.

Brooks says: "We should acquire the habit of observing with attention. Many persons look at objects with a careless, inattentive eye. We should guard against the habit of careless looking. We should fix the mind upon the object before us; we should concentrate the attention upon that upon which we are looking. Attention, in respect to Perception, has been compared to a burning glass; hold the sun-glass between the sun and a board and the concentrated rays will burn a hole through the latter. So attention concentrates the rays of perceptive power and enables the mind to penetrate below the surface of things."

The best authorities agree in the idea that the Perception may be best cultivated by acquiring the habit of examining things in detail. And, that this examination in detail is best manifested by examining the parts going to make up a complex thing, separately, rather than examining the thing as a whole. Halleck says regarding this point: "To look at things intelligently is the most difficult of all arts. The first rule for the cultivation of accurate perception is: Do not try to perceive the whole of a complex object at once. Take the human face for example. A man holding an important position to which he had been elected offended many people because he could not remember faces, and hence failed to recognize individuals the second time he met them. His trouble was in looking at the countenance as a whole. When he changed his method of observation, and noticed carefully the nose, mouth, eyes, chin and color of hair, he at once began to find recognition easier. He was no longer in danger of mistaking A for B, since he remembered that the shape of B's nose was different, or the color of his hair at least three shades lighter. This example shows that another rule can be formulated: Pay careful attention to details.... To see an object merely as an undiscriminated mass of something in a certain place is to do no more than a donkey accomplishes as he trots along."

Brooks says regarding the same point: "To train the powers of observation we should practice observing minutely. We should analyze the objects which we look at into their parts, and notice these parts. Objects present themselves to us as wholes; our definite knowledge of them is gained by analysis, by separating them into the elements which compose them. We should therefore give attention to the details of whatever we are considering; and thus cultivate the habit of observing with minuteness.... It is related of a teacher that if, when hearing a class, some one rapped at the door, he would look up as the visitor entered and from a single glance could tell his appearance and dress, the kind of hat he wore, kind of necktie, collar, vest, coat, shoes, etc. The skillful banker, also, in counting money with wondrous rapidity, will detect and throw from his pile of bills the counterfeits which, to the ordinary eye, seem to be without spot or blemish."

One of the best methods of developing and cultivating the faculty of Perception is to take up some study in which the perceptive faculties must be employed. Botany, physics, geology, natural history give splendid exercise in Perception, providing the student engages in actual experimental work, and actual observation, instead of confining himself to the textbooks. A careful scientific study and examination of any kind of objects, in a manner calculated to bring out the various points of resemblance and difference, will do most to develop the Perception. Training of this kind will develop these powers to a high degree, in the case of small children.

Drawing is also a great help to the development of Perception. In order to draw a thing correctly we must of necessity examine it in detail; otherwise we will not be able to draw it correctly. In fact, many authorities use the test of drawing to prove the degree of attention and Perception that the student has bestowed upon an object which he has been studying. Others place an object before the pupil for a few minutes, and then withdraw it, the pupil then being required to draw the object roughly but with attention to its leading peculiarities and features. Then the object is again placed before the pupil for study, and he is then again required to draw from memory the additional details he has noticed in it. This process is repeated over and over again, until the pupil has proved that he has observed every possible detail of interest in the object. This exercise has resulted in the cultivation of a high degree of perception in many students, and its simplicity should not detract from its importance. Any person may practice this exercise by himself; or, better still, two or more students may combine and endeavor to excel each other in friendly rivalry, each endeavoring to discover the greatest number of details in the object considered. So rapidly do students improve under this exercise, that a daily record will show a steady advance. Simple exercises in drawing are found in the reproduction, from memory, of geography maps, leaves of trees, etc.