_Heaths_ are very difficult plants to manage; but a great improvement has taken place in their culture within the last few years. They are grown in what is called heath mould, that is, a mixture of peat and sand; and when this earth is put into the pot, it is mixed with good-sized entire pebbles, some of which are suffered to protrude through the surface of the soil. The roots of heaths are extremely fine and hair-like, and the shelter afforded by the pebbles is so congenial to them, that, if one of the stones be taken out, a cluster of fine, white, vigorous roots will be found below it. The plants are always potted high, so as to let the base of the stem be above the level of the rim of the pot, as the plants are very apt to damp off if the collar of the plant be buried in the ground. Heaths should never be suffered to become too dry, and never kept too wet. They require very little heat; and many experienced cultivators never apply fire-heat to their heatheries at all, but merely keep out the frost by having wooden shutters to the sashes, and covering them with mats. Heaths, when growing rapidly, should be repotted whenever the roots have filled the pot; but they should not be shifted too often; and, when they have attained their full growth, they may be suffered to remain in the same pots three or four years without injury. As plants in the _conservatory_ are grown in the free soil, they are in a much more natural state than any plants can be in pots, and consequently they require much less care in their culture. There is usually a walk all round the conservatory, next the glass, and one down the middle, on each side of which are the beds containing the plants, and under which are placed the hot-water pipes that warm the house. The consequence of this arrangement is, that the beds on each side the middle walk are so planted as to have their highest shrubs in the centre, shelving down to those of lower growth on each side; and hence the centre is generally planted with tall camellias, acacias, metrosideros, eucalyptus, &c.; while near the walk are placed oleanders, myrtles, fuchsias of different kinds, together with chorozemas, and many of the other most ornamental New Holland plants; and up the pillars that support the roof are trained kennedyas, bignonias, ipomœas, and passion-flowers in great variety. Cliánthus puníceus and Polýgala oppositifòlia ought to find a place in every conservatory; and a plant of Wistària sinénsis may be trained under the rafters so as to afford shade to the camellias; as, under shelter, the wistaria will flower twice in the year, and its flowers will yield a delightful, though very delicate, fragrance.