JANUARY. Stern winter's icy breath, intensely keen, A YEAR is a natural period, and the first imperfect year of ancient times, must, no doubt, have arisen from observing the regular changes of heat and cold, of the leafing, flowering, and fruiting, of the various tribes of vegetables; and the agreement of these appearances with the laying and hatching of birds, and the production of the young of quadrupeds. This way of reckoning, however, was subject to so many variations, that it was soon necessary to make choice of some more constant occurrence by which to mark the length of the year. The ancients began their year in March, and it may appear singular, that modern civilized nations should chuse to commence their year, at a period when nature lies almost dormant, in preference to that season, when the race of vegetables and animals is actually renewed. In defence of the present custom, it may, however, be said, that the lengthening of the day, as it is the chief cause, so it is in fact the commencement of spring. So little influence, however, has this change at first, that the month of January is usually found to be that in which the cold is most severe; there being little or no frost in this country before the shortest day, conformable to the old saying, "as the days begin to lengthen, the frost begins to strengthen." The weather is commonly either bright dry frost, or fog and snow, with cold dark showers, about the close of the month. It used formerly to be a subject of much dispute among natural philosophers, whether frost was a substance, or merely the absence of a certain degree of heat. Thomson, in his Seasons, seems to be of the former opinion. What art thou, Frost ? and whence are thy keen stores Myriads of little salts, or hook'd or shap'd Modern philosophers have, however, very generally taken the opposite side of the question; the little hooked salts, which in, frosty mornings are found floating in the atmosphere, or adhering to the surface of bodies, being found by experiment to be nothing more than small crystals of ice, and capable of being melted by heat into pure water. The principal difficulty here is, how comes it to pass that water, when deprived of its heat, should occupy more space than it did before? for water, when frozen, is expanded, and hence ice is lighter than water, and swims upon it. If any one will observe the formation of ice, he will per ceive, that it is composed of a number of needle-like crystals, which unite to each other, and that the space between these crystals is much more considerable than between the particles of water; and on this account, water, when frozen, occupies more space than before, though it receives no increase of weight. It may be also mentioned, that, in the act of freezing, a quantity of air is intercepted and fixed in the ice, which generally appears to be full of bubbles. It is from this disposition in water, that, if a bottle full of water, hard |