"_What do you do to control the insects?_" was then asked. Most of the answers referred to clustering types of insects and involved removal of the clusters by burning, by cutting off the infested twigs, or by scraping off the clusters from the trunks in the early morning or late evening. Others sprayed with lead arsenate, "sprayed in late summer with lead arsenate", sprayed with nicotine sulphate for aphis and lice. Other methods mentioned were early cultivation, shaking the tree with a pole early and often, and chickens in the grove. Some of these means are adapted manifestly, to small plantings and others to larger groves. None mentioned the attracting of birds by plantings of trees or shrubs that bear berries or small seeds. When trees are tall enough to be beyond reach of poles or sprays, the birds become more essential as insect destroyers. "_What insects damage the nuts?_" Weevil, by long odds. Next come husk maggots or "shock worms", codling moth larvae, borers, stink bugs on filberts, butternut curculio. No cure is given for this trouble except the very valuable one of keeping chickens, or, better still, turkeys running freely in the plantation. Clean cultivation will, of course, destroy many larvae that hibernate under trash. "_What species are most injured by disease?_" None are immune, apparently, though three reporters in favored regions answer "none" are injured. Black walnuts suffer from leaf-spot, blight, or canker, especially in seasons when the trees have been weakened by drought. Hazels and filberts are next, then Persian walnuts, butternuts, native chestnuts, Chinese chestnuts, pecans. Blight in chestnuts, nectria canker and blight in black walnuts, blight in filberts (Cryptosporella), scab in pecans, and die-back Melanconium oblongum in butternuts. These are the kinds of diseases most to be feared among nut trees. Sprays, chiefly with Bordeaux mixture and copper base solutions, are recommended. If nut orchards were generally as well sprayed as apple and peach orchards, we should hear less of disease among nut trees. As it is, nut trees are in general far more resistant by nature to disease than fruit trees, but it will not do to take unlimited resistance for granted. As progress is gradually made in the selection of varieties for better nut production, it is very likely that there will be a weakening of this resistance to disease. Better cultural methods, resulting in more robust growth, will build up resistance. Better sprays and more spraying will act as a barrier not only to disease but to most insect enemies as well.