Where the majority of such Ferns as require artificial warmth have been grown, as from time to time recommended, with more air and light and less atmospheric moisture and heat than are often applied to them, the advantage will now be seen in more compact growth, more persistent in its character, and though the individual fronds may be somewhat smaller, they will have greater ability to retain a fresh sightly appearance than when otherwise treated. If any of the black species of living thrips exist they may now be destroyed by means of fumigation, which, however, should be done with caution, not submitting the plants to tobacco fumes over strong, as some of the tree species, such as Dick-sonia antarctica, are easily injured thereby. - Garden.