the buds, during their development, from every danger of returning cold. The accumulated snows of the winter remaining to be dissolved all together in the spring, produced those overflowings of our rivers, so frequent then, and so rare now.

Having had occasion to mention the particular situation of Monticello for other purposes, I will just take notice that its elevation affords an opportunity of seeing a phenomenon which is rare at land, though frequent at sea. The seamen call it looming. Philosophy is as yet in the rear of the seamen, for so far from having accounted for it, she has not given it a name. Its principal effect is to make distant objects appear larger, in opposition to the general law of vision, by which they are diminished. I knew an instance, at Yorktown, from whence the water prospect eastwardly is without termination, wherein a canoe with three men, at a great distance was taken for a ship with its three masts. I am little acquainted with the phenomenon as it shows itself at sea; but at Monticello it is familiar. There is a solitary mountain about forty miles off in the South, whose natural shape, as presented to view there, is a regular cone; but by the effect of looming, it sometimes subsides almost totally in the horizon; sometimes it rises more acute and more elevated; sometimes it is hemispherical; and sometimes its sides are perpendicular, its top flat, and as broad as its base. In short, it assumes at times the most whimsical shapes, and all these perhaps successively

in the same morning, The blue ridge of mountains comes into view, in the north-east, at about one hundred miles distance, and approaching in a direct line, passes by within twenty miles, and goes off to the south-west. This phenomenon begins to show itself on these mountains, at about fifty miles distance, and continues beyond that as far as they are seen. I remark no particular state, either in the weight, moisture, or heat of the atmosphere, necessary to produce this. The only constant circumstances are its appearance in the morning only, and on objects at least forty or fifty miles distant. In this latter circumstance, if not in both, it differs from the looming on the water. Refraction will not account for the metamorphosis. That only changes the proportions of length and breadth, base and altitude, preserving the general outlines, Thus it may make a circle appear elliptical, raise or depress a cone, but by none of its laws, as yet developed, will it make a circle appear a square, or a cone a sphere,

QUERY VIII.

The number of its inhabitants?

The following table shows the number of persons imported for the establishment of our colony in its infant state, and the census of inhabitants at different periods, extracted from our historians and public records, as particularly as I have had opportunities

and leisure to examine them. Successive lines in the same year show successive periods of time in that year. I have stated the census in two different columns, the whole inhabitants having been sometimes numbered, and sometimes the tythes only. This term, with us, includes the free males above sixteen years of age, and slaves above that age of both sexes. A further examination of our records would render this history of our population much more satisfactory and perfect, by furnishing a greater number of intermediate terms. These, however.

which are here stated will enable us to calculate, with a considerable degree of precision, the rate at which we have increased. During the infancy of the colony, while numbers were small, wars, importations, and other accidental circumstances render the progression fluctuating and irregular. By the year 1654, however, it becomes tolerably uniform, importations having in a great measure ceased from the dissolution of the company, and the inhabitants become too numerous to be sensibly affected by Indian wars. Beginning at that period, therefore, we find that from thence to the year 1772, our tythes had increased from 7,209 to 153,000. The whole term being of one hundred and eighteen years, yields a duplication once in every twenty-seven and a quarter years. The intermediate enumerations taken in 1700, 1748, and 1759, furnish proofs of the uniformity of this progression. Should this rate of increase continue, we shall have between six and seven millions of inhabitants within ninety-five years. If we suppose our country to be bounded, at some future day, by the meridian of the mouth of the Great Kanhaway, (within which it has been before conjectured, are 64,461 square miles) there will then be one hundred inhabitants for every square mile, which is nearly the state of population in the British Islands.

Here I will beg leave to propose a doubt. The present desire of America is to produce rapid population by as great importations of foreigners as pos

sible. But is this founded in good policy? The advantage proposed is the multiplication of numbers. Now let us suppose (for example only) that, in this state, we could double our numbers in one year by the importation of foreigners; and this is a greater accession than the most sanguine advocate for emigration has a right to expect. Then I say, beginning with a double stock, we shall attain any given degree of population only twenty-seven years, and three months sooner than if we proceed on our single stock. If we propose four millions and a half as a competent population for this State, we should be fifty-four and a half years attaining it, could we at once double our numbers; and eighty-one and three quarter years, if we rely on natural propagation, as may be seen by the following tablet:

In the first column are stated periods of twentyseven and a quarter years; in the second are our numbers at each period, as they will be if we proceed on our actual stock; and in the third are what they would be, at the same periods, were we to set out from the double of our present stock. I have taken the term of four million and a half of inhabitants for example's sake only. Yet I am persuaded it is a greater number than the country spoken of, consid