4. That children, in grouping under the tuition of Nature, received and retained the impressions of objects presented to their notice, in a natural and regular order;--forming in their minds a continuous moving scene, where motion formed a part of it; and that this movement of the objects, actually was a portion of the grouping. These being the facts connected with this portion of Nature's educational process, the object of the teacher should be to endeavour to imitate her in all these circumstances; carefully avoiding what she has shewn to be inoperative and hurtful, and copying as closely as possible all those that tend to forward the objects of instruction. The first thing then to be attended to by the teacher, is, that in every attempt to communicate knowledge to a child by the grouping of objects, he takes care that the principle of individuation has preceded it;--that is, that the various ideas or objects to be grouped, be individually familiar to the pupil. In communicating a story, therefore, or an anecdote, or in teaching a child to read, care must be taken that the objects or individual truths, the words, or the letters, be previously taught by themselves, before he be called upon to group them in masses, whether greater or smaller. If this be neglected, an important law of Nature is violated, and the lesson to this extent will be ineffective, or worse. But if, on the contrary, this rule be attended to, the pupil, when he comes to these objects in the act of grouping, is prepared for the process; he meets with nothing that he is not familiar with; he has nothing to learn, and has only to allow the objects to take their proper places, as when he looked into the room, and grouped its contents as before supposed. All this being perfectly natural, is accomplished without effort, and with ease and pleasure.--This precaution on the part of the teacher, will at once remove many of the difficulties and embarrassments which have hitherto pressed so heavily upon the pupil in almost every stage of his advance, but more especially in the early stages of his learning to read.[17]