See MAMMALIA; AGRICULTURE.

**COW-POX**. See VACCINATION.

**COW-TREE** (*Galactodendron utile*), a singular plant of the nat. ord. of *Urticaceae*, particularly described by Humboldt (who however saw neither its flowers nor its seeds), as indigenous to the mountainous region skirting the coast of Caracas. It is a handsome tree; and from its stem, when punctured, there issues a large quantity of milky juice, which has an agreeable flavour, and is very nutritious. It is considered as a valuable article of food in those countries where it abounds, and is known by the name of *Palo de Vaca*. It yields to analysis a considerable quantity of vegetable caseine, with oil and resinous matter. Humboldt and Bonpland considered the tree as allied to the genus *Brosimum*.