I selected a common agricultural employment to illustrate my subject, first, because I suppose a considerable proportion of my readers are farmers, and secondly, because it is an employment which is generally supposed to furnish little or nothing worth recording. The latter, however, is a great mistake. Besides writing down the real incidents that occur, many of which would be interesting, and some of them highly important facts, the _thoughts_, which the circumstances and incidents of an agricultural life are calculated to elicit, are innumerable. And these should always be put down. They are to the mere detail of facts and occurrences, what leaves and fruit are to the dry trunk and naked limbs of a tree. The above specimen is very dry indeed, being intended only as a hint. Pages, instead of a few lines, might sometimes be written, when our leisure permitted, and thoughts flowed freely. One useful method of improving the mind, and preparing ourselves for usefulness, would be, to carry a small blank book and pencil in our pockets, and when any interesting fact occurred, embrace the first spare moment to put it down, say on the right hand page; and either then, or at some future time, place on the left hand page, our own reflections about it. Some of the most useful men in the world owe much of their usefulness to a plan like this, promptly and perseveringly followed. Quotations from books or papers might also be preserved in the same manner.[10] Perhaps it may be thought, at first, that this advice is not in keeping with the caution formerly given, not to read as we travel about; but if you reflect, you will find it otherwise. Reading as we travel, and at meals, and the recording of facts and thoughts which occur, are things as different as can well be conceived. The latter creates and encourages a demand for close observation, the former discourages and even suppresses it. 11. PRESERVATION OF BOOKS AND PAPERS. Let books be covered as soon as bought. Never use them without clean hands. They show the dirt with extreme readiness, and it is not easily removed. I have seen books in which might be traced the careless thumbs and fingers of the last reader, for half a dozen or a dozen pages in succession. I have known a gentleman--quite a literary man, too--who, having been careful of his books in his earlier years, and having recently found them occasionally soiled, charged the fault on those who occasionally visited his library. At last he discovered that the coal dust (for he kept a coal fire) settled on his hands, and was rubbed off upon his book leaves by the slight friction of his fingers upon the leaves in reading.