of tartar, or nitre, in order to dilute or attenuate the blood; which, in this case, is greatly disposed to become clotted, and to engender a total stagnation of the fluids.
When the fever has abated, and the horse has recovered his appetite, the following mild purgative should be given once a week, for some time, till the disorder be entirely removed: Take of Socotrine aloes 6 drams, of pulverized gum guaiacum 12 an ounce, of diaphoretic antimony and powder of myrrh, each 2 drams; form the whole into a ball with syrup of buckthorn. While this medicine is operating, the horse's labour should be suspended for two or three days every week: thus, he will lose neither his flesh nor appetite, but improve in both; because this ball is, on the whole, preferable to any other preparation for that purpose.
MOLYBDŒNA, a mineral that is frequently confounded with black-lead; though possessing properties widely difterent from the latter.—It is of a laminated texture, or formed of plates which slightly cohere; are somewhat greasy to the touch, and soil the fingers; leaving, on paper, marks or traces of a dark-grey colour.
This metal has, hitherto, been found only in Sweden, Germany, Carniola, and the Alps. It is of a light lead-grey shade, sometimes shaded with red, or streaked with a blueish grey. It is insoluble in the sulphuric and muriatic acids; though, in a boiling heat, it tinges them green; effervesces with warm nitric acid, leaving a grey oxyd or powder undissolved; and also with soda, to which it imparts a reddish searl-colour.
Molybdœna is at present extremely scarce; but, should it ever be found in abundance, it will certainly be of great utility both for dyeing and painting. If one ounce of the perfect oxyd of molybdœna, be boiled with sixteen ounces of water, till the liquor is reduced to one-third; then filtred, and half an ounce of it poured into a small glass vessel, containing ten grains of tin-filings; and next, if four drops of the muriatic acid be added to this mixture, and the whole be suffered to stand at rest, a fine blue colour will be speedily produced, which rises from the bottom; gradually acquires a deeper shade; and is, at length, deposited in the form of a blue powder.
A beautiful blue lake may likewise be obtained, by precipitating the solution of muriat of tin, by means of dissolved molybdat of pot-ash, if both solutions be previously diluted with a considerable proportion of distilled water.—This precipitate is called by Richter blue carmine; and, we conceive, might be of eminent service to portrait-painters.
Monarda. See Spice.
MONEY, a piece of metal, which by public authority bears a certain weight and value, so that it may serve as a circulating medium in commerce.
Money is, in general, divided into two kinds, viz. imaginary, or money of account; and real, or effective. The former class includes such as never was coined in specie; and, though a certain term tor expressing it has been invented or retained in different countries, with a view to facilitate the stating of accounts, by keeping them on an uniform basis, yet this ideal money is not liable to be changed in the same manner as current
