Parsnep, the Water, or Sium, L. a genus of plants, comprehending sixteen species ; four being natives of Britain ; and the most remarkable of these are the following :

1. The latifolium, Broad-Leaved Water Parsnip, or Skirret, grows in rivers and fens, where it flowers in the months of July and August.—This herb is eaten by horses and hogs, but is disliked by sheep : the roots of this plant are very hurtful to man and cattle ; and ought, therefore, to be carefully avoided.

2. The anguslifolium, Upper Water-Parsnep, or Narrow-leaved Skirret, thrives in ditches and rivulets, where it flowers from July to September.—This plant, as Dr. Withering observes, " cer-tainly possesses active properties, which ought to be inquired into;' and Bechstkin remarks, that is is not less noxious in its effects ihan the preceding species.

3. The nodiflorum, Creeping-or Procumbent at Water-Parsnip, grows in rivulets and ditches; flowers in the months of July and August.—This plant is very serviceable in diseases of the skin. Dr. Withering cured a child six years old of an obstinate cutaneous affection, by administering three large spoonfuls of the juice, twice a day. He likewise gave three or four ounces to adults, every morn-rag, in similar complaints, with the greatest advantage. Its juice is readily taken by children, when mixed with milk; and neither affects the head, the stomach, nor the bowels.