Abstract
1, The author was able to find the degeneration of the cells of Nucl- motorius n. torigemini, Nuclloci caerulei and Nucl. mesencephalicus n.trigemini of the rat after removal of N. nasseter, so it can be say that the origin of N. masseter is above three nucleus.
2. N. loci cacrulei, its function is not yet clearly determinded, has the relation between the N. masseter, one branch of the N. trigemini and is sensibel.
3. The light degeneration of the cells of the Nucl. mesencephalicus n. trigemini can be found after removal of the N. masseter of the rat, so this nucleus is sensibel.
