It divides and subdivides into smaller and smaller branches, until, in the form of the tiniest vessels, called capillaries, it passes inward among the cells to the very center of the hepatic lobules.

The whole arrangement of passages and air cells springing from the end of a bronchial tube, is called an ultimate lobule.

The present example, like the late Bill, was an undergrown creature, and had the same curiously-twisted nose, the same asymmetrical face and similar earslarge, flat ears that stood out from his head like the handles of an amphora, that had strongly marked Darwinian tubercles, unformed helices and undeveloped lobules.