them by two, we shall perceive that the mean temperatu at both stations will have been 50°; but it will be evider that though this may be similar, the climate of the tv stations will differ.

Such we shall find to be the case with the annual ten perature of various places through which these isotherm. lines may pass. In some, the winters may be mild an the summers only moderately warm, whilst in others th extremes of heat and cold may be experienced. Thu the mean annual temperature of England is 50°, the mea summer temperature being about 63°, and the mean winte about 37°, making a difference of twenty-six degrees; a Pekin the mean annual temperature is 51°, the summe temperature being 79° and the winter 23°, making a differ ence of not less than fifty-eight degrees. The mean annual temperature in these cases is not widely different, but the climate of the two places is wholly dissimilar, the one possessing an insular, and the other an excessive climate.

The difference between the mean summer and winter temperature is usually much less between the tropics than in temperate zones. Thus, at Cumana, which is situated in 10° north latitude, there is only a difference of four degrees between the temperature of the warmest and coldest months.

The greater part of the above-mentioned variations, are accounted for by the causes of diversity of climate already enumerated. Some of the phenomena of temperature and climate appear, however, as far as our present knowledge extends, incapable of explanation by these ordinary causes of variation. Such is the supposed occurrence of two regions of maximum or greatest cold on both sides of the equator. The position of those in the southern hemisphere has not been determined. In the northern hemisphere the regions, or as they are termed meridians of greatest cold, are both situated in about the eightieth parallel of latitude, and (widely speaking) about 100° east and west longitude. The mean annual temperature at the North Pole, is supposed to be about 4° or 5° Fahrenheit; the temperature at these

sations is considerably lower; that of the eastern or Asiatic ridian being nearly 1° Fahrenheit; and that of the stern or American meridian of greatest cold, about 34° How zero. It is not impossible that future researches may w, that these meridians of greatest cold, are attributable the exclusion of those regions, from causes tending to lerate their climate.

The innumerable diversities on the surface of the globe, which the various combinations of climate, soil, and perature give rise, adapt the earth in a remarkable aner for the organized beings with which it is covered. da uniform climate been communicated to the whole th, or even had there been no undulations on its surface, no alternations of land and water, its productions would, probability, have been comparatively limited in variety number; as at present constituted, however, we find the bountiful Creator has not only given us abundance, also almost endless variety, affording us unbounded e for research, and for admiration of the supreme om which is displayed in every part of the natural d; and thus leading us to feel and to acknowledge that

Needs must the Power

That made us, and for us this ample world,

Be infinitely good, and of this good

As liberal and free as infinite.

ENDOGEN Æ.