or Sussex. We see, then, as has been well remarked, that the division of the county, along the line indicated in the section on its geology, into two very unequal portions--namely, a large north-western area with a relatively dry soil and atmosphere, and a smaller south-eastern tract with a comparatively moist soil and atmosphere--forms a sufficient approach to an accurate climatic division. Here we may mention that the daily temperature and the amount of moisture in the air, together with the barometric pressure and a number of other details, are recorded at the Meteorological Office in London from reports received from a host of observing stations (either public or private) scattered at intervals all over the country; and at the end of each year the averages, or “means,” of these observations are worked out for the British Isles and England generally, and likewise for the various counties and other local districts. This enables comparisons to be instituted between the climates of different places with much greater accuracy than would otherwise be possible. In the year 1905 the mean temperature for the whole of England was 48·7°, while that of Hertfordshire was 48·9°, as deduced from observations taken at four stations, of which Bennington showed the lowest mean of 48·4°, and New Barnet the highest of 50·2°. The aforesaid county mean of 48·9° was, however, 0·6° above the average; the average mean for a series of years thus being 47·8°, or about 1° lower than that for England generally.