The child at one year quite frequently has begun to attempt manipulation of his environment as well as of his own body. Very frequently this will be observed in shouts or exclamations accompanied by looking or even pointing to objects which his familiars have previously pointed out to him, such as dogs, cats, trains, carts, etc. These objects will ordinarily not be named by the child, although peculiar sounds fitting each one may frequently be distinguished. Another manifestation of this same attempt at altering his environment will be the crying in which the child will indulge when he desires to change his resting place or to have something to eat. TWO YEARS By the time a child has become two years of age its speech has developed to such an extent that it will be able to name, although frequently not with clearness and distinct pronunciation, many of its toys and articles of food. “Milk,” “rice,” and “cookie,” are examples of the most frequently named objects. Many children have by this age also progressed to the point where two or three or more words may be joined together to form a crude sentence. There are on record children who by two years of age were able to frame fairly good sentences and even to read from simple books, but such records are very unusual. At this time the child should be able to distinguish pictures of familiar objects, such as dogs, cats, horses, men and boys. This will be manifest not only in the child’s being able to name the objects to which other people point in the picture, but when asked, “Where is the dog?” the infant should be able to point to it if the picture is at all clear. Simple commands should be thoroughly understood and the well-trained infant will be able to obey without much delay such directions as “Put the ball in the basket,” “Close the door,” “Bring me the doll,” and “Show me the book.” The average child at two years of age has become distinctly aware of other children as persons more nearly related to itself than are the adults with whom it is ordinarily associated. This reveals itself in imitation of the actions of other children, such as waving the arms when other children do so, hiding the face against the wall when other children are playing hide and seek, and stepping rhythmically when other children dance. By the age of two years the average child can distinguish accurately between that which is food and that which is not fit for eating. The wrapping from candy or cookies or other well-liked food will be removed or torn away before an attempt is made to eat the food. Frequently this will result in great annoyance when the child opens sacks and packages to which he is not entitled.