Page:Willich, A. F. M. - The Domestic Encyclopædia (Vol. 2, 1802).djvu/482

4 5 o] HEA M E C assists the progress of vegetation, tku, Black Crow-bkup-it. -. •* but too intense a degree of it pro- duces efie&s totally different. 6. When latent heat 'is transferred to external bodies, vapours become condensed, and in some cases return to their original state : in others, they are productive of light, and a vehement degree of sensible heat, whence the different phenomena the months of April and May. Its CfiAKE- BERRIES, Empclrmii ni- grum, L. an indigenous plant* growing on moist mountains and elevated heat lis, in the driest and most barren lands, as weU as in bogs and moorlands. It abounds- in Derbyshire, Staffordshire., and the northern counties; flowers in of Distillation, Evaporation, &c. With respect to the purposes to which heat is applicable, such as the warming of apartments, &c. we refer the reader to the ar- ticles Fire-place, Grates, Hot- houses, &c. HEATH, or Erica, L. a genus of plants comprising 100 species, five of which are natives of Bri- tain. The. principal of these is the vulgaris, Common Heath or Ling. It grows on heaths and in woods ; flowers from June to August. In the island of Ishy, in the west of Scotland, a wholesome ale black berries are eaten by the Highlanders; but, if taken in large quantities-, they occasion violent' head-achs : hence they are more proper for grouse. — The plant is not relished by goats, and is to- tally refused by horses, cows, and sheep : — if boiled with alum, the berries impart a purplish dye. HECTIC FEVER, a species of slow fever, returning daily, with paroxysms at noon, and in the evening; generally attended with profuse perspiration at night; and the urine depositing a sediment like brick-dust. Causes : Persons of tender con- is prepared, by brewing one part stitutions, and those who indulge of malt, and two parts of the young in violent passions, especially grief* tops of heath, to which hops are are chiefly liable to the attacks of occasionally added. hectic fevers. — Besides, luxurious- In England, the common heath living, abuse of wine, the drinhing is employed in making brooms and of impure water, the excessive use fagots, which last are used ether of perfumes, as well as the sup- as fuel in ovens, or for filling up pressipn pf natural discharges, and drains before they are covered. — an injudicious treatment of catarr- Horses, sheep, and goats, eat the hal, putrid, inflammatory and in- tender shoots of heath. — The stalks and tops are of considerable service in tanning leather, especially for soles ; and, if woolkn cloth be boiled in alum-water, and after- wards in a strong ek-< notion of the tops, it will acquire a fine 0) colour. — Bees are. veiy partial to the flowers of this specie?; but, v.h'!> Ik.', abounds;, the honey acquires • < dish lint. termiit-'iu feversj fire among the numerous causes of this disorder. Prqgnosis : Hectics arising in consequence pf a favourable feup- puratipo of a wound, or ulcer, are the least dangeipjftS; But, where they are. confirmed, it is in vain to attempt a radical cure-, as medicine can only mitigate the symptoms, and protract a lingering exigence. The changes of the seasons are HE/ [XL, the. Bljiu* -li.ah- particularly fatal to young hectic patitn's.