I. Object of Study Each kind of tree has certain identifying characteristics which mark it as being different from other kinds of species of trees. By careful observation and examination these identifying points may be learned and you can feel that you know the tree. II. Source of Study Material 1. The locality in which you live probably has some trees you know. Why do you know them? Start by studying these trees and make them fast friends. 2. You also will find some trees you are not sure about or do not know; next, study these one by one until you are sure you will always know them. 3. Wherever you may be or whenever you see a tree you do not know, observe it carefully, collect enough facts and sample material to study until you learn to know it. 4. Books, articles, pictures and references will help to learn some trees you cannot actually see but which are of interest to you. III. Approach to Tree Study 1. One tree should be studied at a time as a general rule although it may be an advantage to select somewhat similar trees and study them by comparisons. 2. Field study of the growing tree is the most satisfactory. Observe a number of the same kind of trees as there are individual variations in some characteristics. 3. If possible collect for reference and further study samples of leaves, twigs, bark, wood, flowers and fruit. BE CAREFUL in collecting samples. It is better not to have samples than to deface or injure the tree. No one will object to your studying their trees if you do no damage. IV. Procedure 1. General (a) First observe the tree as a whole taking into consideration all the points that attract your attention. Very often there will be some one thing that either alone or in relation to other points attracts your attention. That feature when studied may be the key to your really learning to know the tree. (b) The suggestions that follow as to observations of various parts of the tree do not limit the study of those points for perhaps you will learn to know the tree from some feature not listed. 2. Form of tree Note the size, shape and branching habit; observe its location in relation to other trees that might affect its form. 3. Bark Observe thickness, roughness, type of fissures and color of bark. Studying the bark as a means of winter identification is particularly worthwhile. 4. Leaves Study type, size, shape and variations on the same tree; note arrangement on twigs; describe by the blade, stalk, margin, venation, base and tip; know their texture and color. 5. Twigs