I do not suppose you will attempt to grow _onions_, as they will require a great deal of care; but you can sow a few in March for salads. If you wish to grow onions of an enormous size, you should raise the seed on a hotbed in February, and transplant them into the open ground in April or May. The soil into which they are transplanted should be very rich, and mixed with charcoal roughly powdered. The onions should be planted a foot apart every way, only the fibrous roots being buried in the soil, and they should be watered regularly every day. All the onion tribe require a very rich soil, which is very much improved for them by mixing charcoal with it. When it is wished to grow onions to a very large size, a hollow space or cup is made in the ground, in the middle of which the onion is placed when it is transplanted, the fibrous roots being buried in the ground at the bottom of the cup. The bulb of the onion, when thus treated, and well watered, swells to an enormous size, and becomes extremely delicate. _Lettuces_ are of two kinds: the cabbage lettuces, which may be sown broad-cast at any time from February to August, and require no after care, except thinning out and watering; and Cos lettuces, which are generally blanched by bending the tips of the leaves over the heart, and tying them in that position with a bit of bast mat. Endive and succory are blanched in the same manner, and mustard and cress only require sowing, as they are cut for salads while in their seed leaves. In France, lettuces are often cut for salads in their seed leaves like mustard and cress. _Celery_ requires a good deal of care in its culture. The seed must be sown in March or April, in a bed the soil of which is formed of equal parts of loam and rotten dung. When the young plants come up, they are transplanted into another bed of very rich soil, and when they are about a foot high they are removed into trenches for blanching. These trenches are made four feet apart, eighteen inches wide, and twelve inches deep, and they are filled nine inches high with a rich compost of strong fresh soil and rotten dung. The plants are taken up with as much earth as will adhere to their roots; and, their side shoots having been removed, they are set in the centre of the trench nine or ten inches apart. As they grow, the earth is drawn up to them, a little at a time, taking care never to let the earth rise above the heart of the plant; and this earthing up is repeated five or six times, at intervals of about ten days or a fortnight, till the plants are ready for use.