The Hedge Mustard (_Sisymbrium_, or _Erisymum_) grows by our roadsides, and on waste grounds, where it seems to possess a peculiar aptitude for collecting and retaining dust. The pods are downy, close pressed to the stem, and the leaves hairy with their points turned backwards. It is named by the French "St. Barbara's Hedge Mustard," and the Singer's Plant, "_herbe au chantre_," or "_herbe au chanteur_." Up to the time of Louis XIV, it was considered an infallible remedy for loss of the voice. Racine writing to Boileau recommended the syrup of _Erysimum_ to him when visiting the waters of Bourbonne in order to be cured of voicelessness. "Si les eaux de Bourbonne ne vous guerissent pas de votre extinction de voix, le sirop d'Erysimum vous guerirait infalliblement. Ne l'oubliez pas, et a l'occasion vingt grammes par litre d'eau en tisane [382] matin et soir." It used to be called Flix, or Flux weed from being given with benefit in dysentery, a disease formerly known as the Flix. This herb has been commended for chronic coughs and hoarseness, using the juice mixed with an equal quantity of honey, or sugar. It has been designated "the most excellent of all remedies for diseases of the throat, especially in ulcerated sore throats, which it will serve to cure when all the advice of physicians and surgeons has proved ineffectual." A strong infusion of the herb is excellent in asthmas, and it may be made with sugar into a syrup which will keep all the year round. The Hedge Mustard contains chemically a soft resin, and a sulphuretted volatile oil. This herb with the vervain is supposed to form Count Mattaei's noted nostrum _Febrifugo_. NETTLE. No plant is more commonplace and plentiful in our fields and hedges throughout an English summer than the familiar stinging Nettle. And yet most persons unknowingly include under this single appellation several distinct herbs. Actually as Nettles are to be found: the annual _Urtica dioica_, or true Stinging Nettle; the perennial _Urtica urens_ (burning); the White Dead Nettle; the Archangel, or Yellow Weasel Snout, and the Purple Hedge Nettle. This title "Urtica" comes _ab urendo_, "from burning."