Put aside a certain amount of time today for study; hold your undivided attention on your lesson, regardless of how many pleasanter things appeal. When your eyes or your thoughts wander from your note-book, bring them back forcibly, if need be. Your first task is to keep your eyes there, instead of letting them follow your roommate's movements, or resting them by watching the street below. But it is easier to do this than to make your mind grasp the meaning of the things you see. You may read two or three pages, and not receive one idea, not even be able to recall any words from the context. Your eyes are obeying your will and seeing the words, but your mind is "wool-gathering." Now take yourself in hand firmly. If you are really a bit fagged, try some deep-breathing exercises before the open window, bathe your face in cold water. Then read a paragraph, close your book, and write, if you are not alone, or repeat to yourself aloud, if your roommate is out, what that paragraph says--its meaning. If you cannot do it, read it again with that end in view. Repeat the process, and hold yourself to it day after day, if necessary, until finally will has won the battle, or, better still, your will to learn has been reinforced by an interest in the very competition with yourself, if not yet in the contest. Then, as you learn some facts from your notes, use your imagination to apply them in real life. The triceps muscle. What is it for? Your notes inform you, and then it is really interesting to see how it performs its function. What origins and attachments must the triceps have to make it extend the arm? Your notes say that a muscle tends to draw the part to which it is attached toward its origin. This triceps muscle straightens the arm. In that case it must oppose the flexion at the elbow. How is that likely to be done? The triceps must start somewhere above the elbow, and quite far above, too, to be able to make a straight angle of an acute one; it must start toward the back in order to draw back the forearm; and be attached to the back of the bone below. Also it must be quite a long muscle. So much reason tells you. Now let me see how it is done, in fact. And you find that the triceps has three origins high above its one attachment as a tendon, to give it a good strong pull. These are in the outside of the humerus and in the scapula. That is logical, and you will remember it. Now how does the arm bend? What pulls against the triceps? And you are interested before you know it.