Page:Willich, A. F. M. - The Domestic Encyclopædia (Vol. 2, 1802).djvu/533

501&#93; 11 V A U. ^ ~)~3. The same practical w rite r's Ho reations in Agriculture, of u Uicli live volumes Dave b en ady published — I. Mr. Ellis's // tbandt u abridged and methodixr ivefts. 10s. o'.i.) — 5. Mr. Hartb's Essays in Husbandry — 6. Mr. Parkin- . i Experienced Farmer (2 ols. 8vo. Robinsons, i7. ( '^)> a work containing a variety of useful hints and directions. — Much valuable in- formation may also be collected from the New Farmer's Calendar (Svo. pp.619. 9 s ' Symonds,180Q); and likewise from Mr. Banis- FEr's Synopsis of Husbandry (so. pp. 471. 7-s. Robinsons, 170;;), which last-mentioned work is ob- viously written by a man of expe- rience. There are many other works of merit published by English wri- ters on agriculture ; but, as our narrow limits will not permit us to specify them, we cannot con- clude this article better than in the words of the excellent Lord So- MBrville, whose name we have frequently cited : " Economy (says this enlightened nobleman) is the lite and soul of husbandry : when we lost sight of it, plenty deserted us; a:;d unless it be speedily re- curred to, she will not return. May that period, when of necessity we must put in execution some plan ier the relief of our poor, be far from us! May vigorous and eco- nomical husbandry prevail through- out the kingdom, without the aid 0/ legislative interference ' ' HXACJNTH, or Hyacinthus, L. a genus of perennial plants, comprising 10 species, one of which is indigenous; namely, the non-r scriptus, English Hyacinth, or Han bell Hyacinth (Scilla nutans, or lid Hyacinth of Dr. Smith) ; KYD [ 5 oi •ws in woods and hedges, wh< re it dowers in the month of May. Tin fresh roots of this plant arc poisonous; but it appears from ex- periments, that they may be ad- vantageously converted into starch. The most admired of the exotic species is the Oriental is, or Eastern 1 [yacinth, which is cultivated to a great extent, and with success, by the florists of Holland, whence it has been lately imported. Jt is one of the most odoriferous flowers,, and has several hundred varieties, the price of which is from three- pence to 301. or 301. per root ! The hyacinth is a hardy plant, and will prosper in any soil, though the more delicate varieties require to be sheltered during the severity of winter. They may be propa- gated either from the seed, or by planting off-sets from the roots, in autumn; in which latter case the bulbs ought to be previously cleaned and dried. Hydrocephalus. See Wa- ter in the head. HYDROMETER, an useful in- strument for measuring the gravity, density, strength, &c. of spirits, or other liquids. For this purpose, various hydro- meters have been contrived on dif- ferent principles; but the most sim- ple of which appears to be that de- vised by Mr. William Jones, mathematical instrument - maker, Holborn. Jt requires only three weights to discover the strength of spirits, from alkohol down to wa- ter, and is adjusted to the tempe- rate state of the air, or to 60° of Fa h r e khei t' s thermometer. Far- ther, as an alteration of this tem-» perature has a very material effect on the gravity of spirits, by causing them to appear much stronger dur- ing warm weather, and the reverse Kk3 in