This is a vintage illustration depicting whirlwinds of dust. The image features two distinct elements: **Upper Section:** Several tall, slender, swirling columns of dust are illustrated. They appear as textured, elongated shapes, resembling miniature tornadoes. Each column is composed of tightly packed, swirling lines, giving the impression of rotating dust particles. Arrows are drawn around the base of the columns, indicating the direction of rotation. **Lower Section:** A large, rounded mass of dust is depicted below the columns. It's a broad, amorphous shape with a heavily textured surface, created by dense, short lines. This mass appears to be the source or base from which the swirling columns originate. The entire illustration is rendered in a detailed, engraved style, typical of vintage scientific or natural history illustrations. The background is a plain, off-white color. Below the image, the caption reads: "Figs. 122, 123.—Whirlwinds of Dust." The overall impression is a scientific depiction of dust devils or small whirlwinds, likely intended for educational or documentation purposes.