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In the year 1758 we exported seventy thousand hogsheads of tobacco, which was the greatest quantity ever produced in this country in one year. But its culture was fast declining at the commencement of this war and that of wheat taking its place: and it inust continue to decline on the return of peace. I suspect that the change in the temperature of our climate has become sensible to that plant, which, to be good, requires no extraordinary degree of heat. -- But it requires still more indispensably an uncommon fertility of soil : and the price which it commands at market will not enable the planter to produce this by manure. Was the supply still to depend on Virginia and Maryland alone as its culture becomes more difficult, the price would rise, so as to enable the planter to surmount those difficulties and to live. — But the western country on the Mississippi, and the Midlands of Georgia, having fresh and fertile lands in abundance, and a hotter sun, will be able to undersell these two states, and will oblige them to abandon the raising tobacco altogether. And a happy obligation for them it will be. It is a culture productive of infinite wretchedness. Those employed in it are in a continual state of exertion beyond the power of nature to support. Little food of any kind is raised by them; so that the men and animals on these farins are badly fed, and the earth is rapidly innpoverished. The cultivation of wheat is the reverse in every circumstance. Besides clothing the earth with herbage, and preserving its fertility, it feeds the labourers plentifully, requires froin them only a moderate toil, except in the season of harvest, raises great nunibers of animals for food and service, and diffuses plenty and happiness among the whole. We find it easier to make an hundred bushels of wheat than a thousand weight of tobacco, and they are worth more when made. The weavil indeed is a formidable obstacle to the cultiva. tion of this grain with us. But principles are already known which must lead to a remedy. Thus a certain degree of heat, to wit, that of the common air in summer, is necessary to hatch the egg. If subterranean

gtanaries, or others, therefore, can be contrived below that temperature, the evil will be cured by cold. A degree of heat beyond that which hatches the egg we know will kill it. But in aiming at this we easily run into that which produces putrefaction. To produce putrefaction, however, three agents are requisite, heat, moisture, and the external air. If the absence of any one of these be secured, the other two may safely be admitted. Heat is the one we want. Moisture then, or external air, must be excluded. — The former has been done by exposing the grain in kilns to the action of fire, which produces heat, and extracts moisture at the same time: the latter, by putting the grain into hogsheads covering it with a coat of lime, and heading it up. In this situation its bulk produced a heat sufticient to kill the egg; the moisture is suffered to remain indeed, but the external air is excluded. A nicer operation yet has been attempted ; that is, to produce an interniediate temperature of heat between that which kills the egg, and that which produces putrefaction. The threshing the grain as soon as it is cut, and laying it in its chaff in large heaps, has been found very nearly to hit this temperature, though not perfectly, vor always. The heap generates heat sufficient to kill must of the eggs, whilst the chaff commonly restrains it from rising into putrefaction. But all these methods abridge too much the quantity which the farmer can manage, and enable other countries to undersell him which are not infested with this insect. There is still a desideratum then to give with us decisive triumph to this branch of agriculture over that of tobacco. The culture of wheat, hy enlarging our pasture, will render the Arabian horse an article of very considerable profit. Experience has shown that ours is the particular climate of America where he may be raised without degeneracy. Southwardly the heat of the sun occasions a deficiency of pasture, and north wardly the winters are too cold for the short and fine hair, the particular sensibility and constitution of that race. Anjinals transplanted into unfriendly climates, either change their nature and

acquire new fences against the new difficulties in which they are placed, or they multiply poorly and become extinct. A good foundation is laid for their propagation here by our possessing already great numbers of horses of that blood, and by il decided taste and preference for them established among the people. Their patience of heat without injury, their superior wind, fit ibern better in this and the more southern climates even for the drudgeries of the plough and wagon. North wardly obey will become an oliject only to persons of taste and fortune, for the saddle and light carriages. To those, and for these vises, their fleetness and beauty will recommend them. -- Besides these there will be other valuable substitutes when the cultivation of tobacco shall be discontinuell, such as cotton in the eastern parts of the state, and hemp and flax in the west

It is not easy to say wh are the ariicles either of necessity, comfort, or luxury, which we cannot raise, and which we therefore shall be under a necessity of importing from abroad, as everything hardier than the olive, and as hardy as the fig, may be raised here in the open air. Sugar, coffee and tea, indeed, are not between these limits; and habit having placed them ainong the necessaries of life with the wealthy part of our citizens, as long as these habits remain we must go for them to those countries which are able to furnish them.

ern.

QUERY XXI.

Tue weights, measures, and the currency of the hard money? Some details relating to exchange with Eu

rope ?

Our weights and measures are the same which are fixed by acts of parliament in England. How it has happened that in this as well as the other American states the nominal value of coin, was made to differ from what it was in the country we had left, and to

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differ among ourselves too, I am not able to say with certainty. I find that in 1631 our house of burgesses desired of the privy council in England, a coin debased to twenty-five per-cent: that in 1645 they forbid dealing by barter for tobacco, and established the Spanish piece of eight at six shillings, as the standard of their currency: that in 1655 the changed it to five shillings sterling. In 1680 they sent an address to the king, in consequence of which, by proclamation in 1683, he fixed the value of French crowns, rix dollars, and pieces of eight at six shillings, and the coin of New-England at one shilling. That in 1710, 1714, 1727, and 1762, other regulations were made, which will be better presented to the eye stated in the form of a table as follows:

1710.

1714.

1727.

1762.

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4s3 dwt.

paper money, was that of silver dollars selling at six

The first symptom of the depreciation of our present

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Guineas

26s.
British gold coin not milled, coin-

ed gold of Spain and France,
chequins, Arabian gold, moi-
dores of Portugal

58. dwt.
Coined gold of the empire

5s. dwt. English milled silvey money, in proportion to the crown, at

5510.
Pieces of eight of Mexico, Sev-

ille and Pillar, ducatoons of
Flanders, French ecus, or sil-
ver Louis, crusados of Portu-
gal

34 d. dwt.
Peru pieces, cross dollars, and old

rix dollars of the empire 33d. dwt.
Old British silver coin not mil-
led

3fd. dwt.

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