1. The state of the atmosphere.
2. The electrical condition of the clouds.
3. The movements of the atmosphere.
4. The season of the year.
"Behold, he withholdeth the waters, and they dry up; also he sendeth them out, and they overturn the earth."—Job xii.
381. What are the dimensions of clouds?
A single cloud has been estimated to have as many as twenty square miles of surface, and to be above a mile in thickness, while others are no larger than a house, or a man's hand.