BUTTE

a city of Montana, in Silver bow co., of which it is the county seat. It is on the Northern Pacific, the Great Northern and other railroads. Butte is one of the most important mining cities in the world, copper mining being the most important, although there are valuable gold and silver mines. The Anaconda copper mines are here as well as other important mines. Butteis the industrial center for southern and west~ ern Montana. It has many handsome public buildings, a public library, banks, and is the seat of the State School of Mines. Pop. 1920, 41,611. BUTTER. A fatty substance derived from the milk of cows, goats, buffaloes, and other animals. It is composed of fat, casein, albumen, sugar, salt and water, the water composing over 87 per cent. The amount of fat contained in milk is between 3 and 4 per cent. and this, when separated from most of other ingredients of the milk, butter. Formerly all the butter made in small quantities upon ual farms, but in the United and elsewhere the larger proportion now made in butter factories or eries. These factories receive the and cream and make the butter in quantities. The chief butter countries in the world are the States, Denmark, Sweden, Ireland and Australia. The States exports a considerable in normal times. During the World butter was one of the commodities which rose greatly in price and its was to a large extent superseded substitutes, which in many cases so perfected as to be with detected as not being real Following the war, in 1921-22, there an increased production in butter, because of the decreased production condensed and evaporated milk, spite of increased production, the of butter did not materially for several years following the end war. In 1921, 34,343,653 pounds butter were imported to the States, while 7,829,255 pounds exported. The imports of butter in amounted to 9,551,292 pounds, and exports to 7,511,997 pounds.