To those who have a good stock of animals, with Muck convenient to their yards, I would not recommend any other treatment than the foregoing; but there are many who keep few animals, or whose muck-beds lie at the back of their farms, two or three hundred rods from their barns; while they wish to fertilize the fields in this quarter, which have been slighted in former applications, because of the distance over which manure had to be hauled. If these possess or can buy good hard-wood, house-made Ashes at twenty-five cents or less per bushel, I would say, Mix these well, at the rate of two or three bushels to the card, with your Muck as you dig it; work it over the next Spring, and apply it the ensuing Fall, so as to give it a full year to ripen and sweeten, and it will be all right. But, if you have not and cannot get the Ashes, and _can_ procure dirty, refuse Salt from some meat-packer or wholesale grocer, apply this as you would have applied the Ashes, but in rather larger quantity; and, if you can get neither Ashes nor Salt, use quick Lime, as fresh and hot from the kiln as you can apply it. The best Lime is that from burned Oyster-Shells; I consider this, if nowise slaked, nearly equal to refuse Salt; but Oyster-Shell Lime is too dear at most inland points; and here the refuse of the kilns--that which is not good enough for mason-work--must be used. Usually, the lime-burner has a load or more of this at the clearing out of every kiln, which he will sell quite cheap if it be taken out of his way at once; and this should be looked for and secured. Being inferior in quality (often because imperfectly burned), it should be applied in larger quantity--not less than four bushels to each cord of Muck. * * * * * I will not here describe the process of mixing Salt with Lime commended by Prof. Mapes, because it is not easy to bring these two ingredients together so as to mix them with the Muck as it is dug: and, though I have used them after Prof. Mapes's recipe, and purpose to do so hereafter, I do not feel certain that any positive advantage results from their blended application as a Chloride of Lime. If I should gain further light on this point before completing this series, I shall not fail to impart it. XXII. INSECTS--BIRDS.