1419. The natural data for this study are,-1. The vegetable kingdom; many plants shutting or opening their flowers, contracting or expanding their parts, &c. on approaching changes in the humidity or temperature of the atmosphere: 2. The animal kingdom; most of those familiar to us exhibiting signs on approaching changes, of which those by cattle and sheep are more especially remarkable; and hence shepherds are generally, of all others, the most correct in their estimate of weather: 3. The mineral kingdom; stones, earths, metals, salts, and water of particular sorts, often showing indications of approaching changes: 4. Appearances of the atmosphere, the moon, the general character of seasons, &c. The characters of clouds, the prevalence of particular winds, and other signs, are very commonly attended to.