How The Water Rises in The Soil

Fig. 8. Using Lamp-Chimneys
To show the Rise of Water in Soil

When the hot, dry days of summer come, the soil depends upon the subsoil, or undersoil, for the moisture that it must furnish its growing plants. The water was stored in the soil during the fall, winter, and spring months when there was plenty of rain. If you dig down into the soil when everything is dry and hot, you will soon reach a cool, moist undersoil. The moisture increases as you dig deeper into the soil.

Fonte: Agriculture for Beginners