This table shows us that the Mangolds require the mineral ingredients of manure in the following order, when arranged with reference to their importance:--Potash, Soda, Chlorine, Lime, Phosphoric Acid, Magnesia, Sulphuric Acid, Silica. In addition to these minerals other substances enter into the composition of Mangolds, the most important of which is Nitrogen. Barn-yard manure contains about all the elements needed by vegetation, but not always in the right proportion, therefore, when applying it, it is always profitable to know the proportions of the minerals which enter into crops that the deficiency may be supplied from other sources. It is perhaps hardly necessary to say that unleached wood ashes and the German Potash Salts, Sulphate and Muriate, are the cheapest sources for Potash at present known, while Soda and Chlorine are obtained from Muriate of Potash or from the waste salt of the fisheries. Of this I shall have more to say presently when treating of salt as an auxiliary fertilizer. Lime is obtained from the common Carbonate of Lime of the mason, either water or air slacked, and this usually contains more or less of Magnesia, or from wood ashes which is largely one-third lime. The great source of Phosphoric Acid is the bones of animals or corprolites, by which is meant the fossilized bones and dung of extinct animals; Sulphuric Acid is most cheaply obtained from Plaster, which is Sulphate of Lime. Some hold great benefit is derived by the crop of the following year, from ploughing under the leaves as soon as the roots are topped; the value of this is just what the analyses of our table shows. The large crops reported as raised in this country, have been raised on soil ranging from light to a friable clay loam and have received all the way from eight to fifteen cords of barn-yard manure to the acre. In some instances this has been all ploughed in; in others half spread broadcast and ploughed in and the other half put in the furrows. When coarse and unfermented I would advise a deep ploughing of it under, in the Fall as with Carrots; other waste substances can be used as substitutes for barn-yard manure, care being taken either that such waste substances are specially rich in Potash, Soda and Chlorine, or that these substances be added. The equivalents given are roughly estimated under the article treating of the manure for Carrots and will be sufficient for practical purposes; I therefore make no further allusions to these cheap wastes as sources for manure, further than to mention that sea manures are specially rich in potash and soda.