Little-peach is possibly a variant of peach-yellows or, at least, is very similar in nature. It seems to have been described first in Michigan in the early nineties of the last century but had attacked orchards in New York before that time so that it is now impossible to say where it first appeared. Be that as it may, the disease is not now the exclusive possession of either state but in the twenty years of its history has become as widely distributed as yellows, covering about the same territory, and seems now to be equally destructive. Outwardly the disease differs from yellows chiefly: (1) In delayed rather than premature ripening of the under-sized fruits of little-peach; (2) the leaves usually show more green than in yellows and show a decided tendency to droop or roll; (3) little-peach, as a rule, appears later in the season than yellows; (4) the characteristic, sickly, wiry shoots of yellows are seldom present in little-peach. Little-peach is kept at bay, as in yellows, by extermination of affected trees. Rosette, though distinct in most of its symptoms from yellows and little-peach, is clearly similar in nature, is just as virulent and contagious, is communicated in the same ways and requires the same treatment. On trees affected with rosette the fruits shrivel and drop and tufts or rosettes of leaves develop freely. Rosette is not found in New York nor north of the Potomac and hence is of but passing interest to peach-growers in this State. Brown-rot (_Sclerotinia fructigena_ (Persoon) Schroeter), known also as fruit-mold and ripe-rot, attacks flowers and shoots of the peach, but is most conspicuous on the ripe or ripening fruits. Here its presence is quickly detected by a dark discoloration of the skin which is afterwards partly or wholly covered with pustule-like aggregations of gray spores. The decayed fruits fall to the ground or more often hang to the tree, becoming shriveled mummies, each mummy being a storehouse of fungus threads and spores from which infestation spreads to the next crop. The rot spreads with surprising rapidity on the fruits in warm, damp weather either before the fruit is picked or in baskets while being shipped or stored. Preventive remedies have so far met with but indifferent success; probably the best method of control is to destroy the mummy-like fruits and all other sources of infection either by picking them from the trees, or much better by plowing them under deeply. Even so it is impossible to exterminate all of the countless myriads of brown-rot spores. Spraying with the self-boiled lime-sulphur mixture three times at intervals of three weeks, beginning as the calyxes drop, is the appointed preventive but the results are uncertain, as this is one of the diseases in which it is difficult to touch the spot in spraying. Varieties of peaches show various degrees of susceptibility to brown-rot.