PART VI.

METEOROLOGY.

I. Something about the weather. 69

II. Of the weather in summer and winter. 73

III. The currents of air and the weather. 75

IV. The firm rules of meteorology. 78

V. Air and water in their relations to weather. 81

VI. Fog, clouds, rain, and snow. 84

VII. How heat in the air becomes latent, and how it gets free again. 87

VIII. Latent heat produces cold, free heat produces warmth. 90

IX. Rules about the weather, and disturbances of the same. 93

X. The changeableness of the weather with regard to our geographical position. 96

XI. About the difficulty and possibility of determining the weather. 98

XII. The false-weather prophets. 101

XIII. Has the moon influence upon the weather? 103