(From Ileum Intestinum 4552 to turn about; on account of its many convolutions,) eilion; ilion; one of the small intestines, immediately following the jejunum. Its convolutions surround those of the jejunum, on the two lateral and inferior sides, and it winds about from the left side by the hypogastrium to the right side, where it terminates in a transverse manner at the fleshy brim of the pelvis, and forms the first of the great intestines, called cecum. Winslow observes, that the ileum is of a paler red than the jejunum. Through the whole length of this intestine it is wide and easily dilatable; but where it enters the colon narrow, and its sides more firm and solid.

In the course of this intestine, the valvulae conniventes gradually decrease in size and number. When it approaches the coecum they become longitudinal. In this intestine also, as well as in the jejunum, there are single solitary glands or lacunae; sometimes clusters of glands called reticulated, increasing in number near its extremity, and flatter than in the jejunum. The ileum is more closely tied down than the jejunum, and consequently less capable of dilating. The appendices digi-tales are denominated from their resembling the finger of a glove, and are little processes sometimes sent off from the jejunum and ilium: they sometimes form hernia.

Ilelm cruentum; described by Hippocrates in his work De Internis Affectionibus. In this disease, as well as in the scurvy, the breath is fetid, the gums recede from the teeth, haemorrhages of the nose and ulcers in the legs occur; but the patient's general health is not greatly injured.