Seed when castor beans have been ingested by animals. In addition, seeds containing amygdalin—apple, apricot, bitter almond, peach, plum, cherry, quince, and others—when consumed in sufficient amounts, may cause cyanide poisoning. Other seeds that contain poisons include annona, cotton, custard apple, datura, uncooked durian, golden chain, horse-chestnut, larkspur, locoweed, lychee, nectarine, rambutan, rosary pea, sour sop, sugar apple, wisteria, and yew. The seeds of the strychnine tree are also poisonous, containing the poison strychnine. The seeds of many legumes, including the common bean ("Phaseolus vulgaris"), contain proteins called lectins which can cause gastric distress if the beans are eaten without cooking.
Poisonous pedagogy defined functions. Although not explicitly, "poisonous pedagogy" serves, these theorists allege, as a rationalization of sadism and a defense against the feelings of the parent himself or of the person involved. For methods, Rutschky claims, "poisonous pedagogy" makes use of initiation rites (for example, internalizing a threat of death), the application of pain (including psychological), the totalitarian supervision of the child (body control, behavior, obedience, prohibition of lying, etc.), taboos against touching, the denial of basic needs, and an extreme desire for order. The Roman poets Plautus, Horace, Martial, and Juvenal described corporal punishments in schools. It is also written