14. Some late writers have divided the worms into three or more distinct classes; but the Linnæan division is into five ORDERS.
| ORDERS OF VERMES, OR WORMS. | ||
| I. | Intestinal | Are simple and naked, without limbs; some of them live within other animals, as the ascarides and tape-worms; others in water, as the leeches; and a few in the earth, as the earth-worm. |
| II. | Molluscous | Are simple animals, without shell, and furnished with limbs, as the cuttle-fish, medusæ, star-fish, and sea-urchins. |
| III. | Testaceous | Are animals similar to the last, but covered with shells, as oysters, cockles, snails, and limpets. |
| IV. | Zoophytes | Are composite animals, and appear to hold a rank between animals and vegetables; though they are in fact true animals, and possess sensation and voluntary motion. In many instances a great number of them inhabit the same stone, but some are soft, naked, and separate. The coral, sponge, and polypes, are instances of this order. |
| V. | Animalcules | Are destitute of tentacula or feelers, and are generally so minute as to be invisible to the naked eye. They are chiefly found in different infusions of animal and vegetable substances. |
CLASS I.—MAMMIFEROUS ANIMALS.
ORDER I.—PRIMATES.
15. MAN.
The only production of the human body which appears to be useful in a commercial view, is the hair.
Human hair, for the purpose of being made into wigs, and ornamental head-dresses, is imported into this country from the Continent, and chiefly from Germany. We also import hair from China, but the latter is generally of very dark colour. On the Continent this article is almost wholly collected by pedlars, who travel through the different countries, and carry trinkets and other articles for sale, and to exchange for it.
When, some years ago, long hair was much more fashionable than it is at present, great numbers of young women in Germany suffered their hair to grow, and had it cut, from time to time, as a source of emolument. The notion that long hair is frequently cut from the heads of persons after they are dead is totally unfounded, since the uncertainty of such supply would alone render it impracticable. The hair that is used for men's wigs is almost wholly children's hair, no other being in general considered sufficiently fine for this purpose.