The scrofula to which the Water-cress and its allied plants are antidotal, got its name from _scrofa_, "a burrowing pig," signifying the radical destruction of important glands in the body by this undermining constitutional disease. Possibly the quaint lines which nurses have long been given to repeat for the amusement of babies while fondling their infantine fingers bear a hidden meaning which pointedly imports the scrofulous taint. This nursery distich, as we remember, personates the fingers one by one as five little fabulous pigs:--the first small piggy doesn't feel well; and the second one threatens the doctor to tell; the third little pig has to linger at home; and the fourth small porker of meat has none; then the fifth little pig, with a querulous note, cries "weak, weak, weak" from its poor little throat. "oegrotat multis doloribus porculus ille: Ille rogat fratri medicum proferre salutem: Debilis ille domi mansit vetitus abire; Carnem digessit nunquam miser porculus ille; 'Eheu!' ter repetens, 'eheu!' perporculus, 'eheu!' Vires exiguas luget plorante susurro." [131] On account of its medicinal constituents the herb has been deservedly extolled as a specific remedy for tubercular consumption of the lungs. Haller says: "We have seen patients in deep declines cured by living almost entirely on this plant;" and it forms the chief ingredient of the _Sirop Antiscorbutique _given so successfully by the French faculty in scrofula and other allied diseases. Its active principles are at their best when the plant is in flower; and the amount of essential oil increases according to the quantity of sunlight which the leaves obtain, the proportion of iron being determined according to the quality of the water, and the measure of phosphates by the supply of dressing afforded. The leaves remain green when grown in the shade, but become of a purple brown because of their iron when exposed to the sun. The expressed juice, which contains the peculiar taste and pungency of the herb, may be taken in doses of from one to two fluid ounces at each of the three principal meals, and it should always be had fresh. When combined with the juice of Scurvy grass and of Seville oranges it makes the popular antiscorbutic medicine known as "Spring juices." A Water-cress cataplasm applied cold in a single layer, and with a pinch of salt sprinkled thereupon makes a most useful poultice to heal foul scrofulous ulcers; and will also help to resolve glandular swellings.