We see by the Avalanche, of Memphis, that those who want other people to plant Eucalyptus forests instead of themselves, are having a warm time in that part of the world as well as elsewhere. The discussion has brought out Mr. Stewart, the well-known nurseryman of that place, who tells his neighbors that he planted a lot out in 1877. They grew twelve feet during the season, but were destroyed by the same white frost that killed the sweet potatoes. A prominent seedsman tells us that the amount of Eucalyptus seed he sells is astonishing. At first he wrote and told the inquirers that they might as well plant forests of cocoa nuts in our country as this, but it was looked on as a "trade excuse for not keeping the seed." So he now sells to whoever orders it, giving only the information about its Australian character when any one asks the question.