AMCEBA, or PROTEUS ANIMAL ITLE, a protozoan classified as one of the hizopods, which is present almost every 'here in fresh water, and sometimes in 'mist earth, and is commonly taken as type of the unicellular animals. It ; a mere drop of animated jelly (protoplasm, .v.), hardly visible to the unaided eye, which .nder the microscope is seen to be divisible ato an inner granular mass (endosarc) and an uter clearer part or envelope (ectosarc) ; but here is no essential difference in substance be ween them. Imbedded in the interior granules a large spherical globule, the nucleus, con isting of a clear chromatic substance contain ag minute granules of chromatin. A contrac ile vacuole lies in the ectosarc, and manifests lore or less regular and rhythmical expansions nd contractions; this seems to serve the pur oose of an excretory organ. The amoeba con inually throws out irregular threads and ex ensions (pseudopods), so that its shape is nore often like that of a drop of any thick iquid which has fallen and spattered, than of globule; this shape is changing incessantly as he creature slowly creeps about. Whenever it ouches any edible particle of organic material t slowly enfolds it, and the particle sinks into he body, where it is gradually dissolved, its iutritive material is digested and assimilated, urnishing food and fuel to the protoplasm, nd the innutritious parts are finally gathered nto the vacuole, whence they are squeezed out .nd discarded.
Amoeba reproduces itself by a simple proc ss of division. A constriction takes place at
point where the nucleus will be divided, and ;oes on until the animal becomes dumbbell haped. Finally the two parts separate, and ach becomes a distinct and perfect whole, each vith its half of the original nucleus, which at once becomes, in each case, a whole nucleus. After a time these individuals in turn undergo a similar division and so on. It may there fore be said that amoeba never ceases to exist — never dies; but simply multiplies indefinitely by repeated divisions.
Certain forms of Ameba, notably A. coli, are the cause of a distinct kind of dysentery now termed amoebic dysentery. This is a dis ease mostly of the tropics, but is also found endemic in the United States. Occasionally the parasite may infect the liver, causing an abscess in that organ. The disease is difficult to treat.
a-mon-rA (originally Rt. and later Amox Rt), the national god of Egypt during the greater part of its history. His worship was a form of sun-worship. The in signia of the god was the (solar disc encircled by the poisonous uraeus serpent.? In the 12th dynasty, to strengthen the hold of Thebes on the country, the local Theban divinity Amon was transformed into the sun-god Amon-Re. His worship extended beyond the confines of Egypt. Thebes was the centre of the worship and for a time his high-priests were the rulers of Egypt. His consert was Mut, the mother of the gods.