In applying fertilizers keep them near the surface, scattering them broadcast and raking or harrowing in. It is better not to apply these all at once. Apply about two-thirds at the time of sowing, the remainder when the crop is about one-third grown--following it with the slide hoe, which will tend to work it in just under the surface. In applying all fertilizers in the Spring time, it is well to do so early in the day, as winds are apt to rise as the day advances, which seriously interfere with the economical application and even distribution. Fertilizers tend to hasten the maturity of the crops to which they are applied. There is one condition that has a very important bearing on the cost of Carrots and all roots, viz.:--that both the ground and manure should be as free from all weed seed as possible. For this reason ground recently from the sod, the third year, provided it has been kept under a high state of cultivation, and such manures which from their very nature must be comparatively free from the seed of weeds, such as fish composts, night soil, or barn manure a year old, are to be preferred. Dr. Voelcker gives the result of 10 analyses of the ashes of the root and 2 of the ashes of the leaves of the Carrot, and from these deduces the following as the number of pounds of mineral matter taken from an acre of land, by 10 tons of roots and 4 tons of tops. Potash, Soda, Lime, Phosphoric Acid, 116 lbs. 86 lbs. 101 lbs. 31 lbs. Sulphuric Acid, Chlorine, 34 lbs. 31 lbs. To those who desire to experiment with mineral manures this table will be interesting as showing the kinds and proportion of each needed. The potash is found in unleached ashes, from two to five pounds to the bushel; or in the German Potash salts; the soda and chlorine in common salt, (chloride of sodium); lime in the common lime of the mason, the Phosphoric acid in the phosphates offered in the markets, and the Sulphuric acid in that directly or in common finely ground plaster known by chemists as Sulphate of Lime. I shall have occasion to present some very valuable suggestions of the learned Professor, under the head of “The Manure” in my article on Mangolds, to which they more especially apply.