ClipArt ETC
<i>Ecballium elaterium</i>. "A vessel which is usually long, with fusiform extremities, and has the walls thickened in a spiral manner with one or more simple simple or branched bands or fibers. In most cases the direction of the spiral is from right to left, but it frequently happens that the earlier formed spirals run in one direction, while those formed later run in an opposite direction." &mdash;Whitney, 1889

Spiral Vessels or Ducts of the Squirting Cucumber

Ecballium elaterium. "A vessel which is usually long, with fusiform extremities, and has the walls thickened…

Oil-glands and ducts. 1, A, Oil-gland from the scalp; B, Its duct. 2, A, Two glands from the skin of the nose. B, Common duct. 3, A, Oil-gland from the nose; B. The duct filled with the peculiar animalculae of the oily substance; the heads are directed inward. 4, A, Cluster of oil-glands around the shaft of the hair (C); B, Ducts.

Oil Glands and Ducts

Oil-glands and ducts. 1, A, Oil-gland from the scalp; B, Its duct. 2, A, Two glands from the skin of…

The Salivary Gland with its duct.

Salivary Gland

The Salivary Gland with its duct.

This illustration shows a vascular bundle enlarged: x, xylem; v, vessels or ducts; p, phloem; s, sieve tube; ac, accompanying cell; c, cambium; st, stereome.

Vascular Bundle

This illustration shows a vascular bundle enlarged: x, xylem; v, vessels or ducts; p, phloem; s, sieve…