CONNERSVILLE  , a

city and the county-seat of Fayette county, Indiana, U.S.A., situated on White Water river, in the east central part of the state, about 50 M . E. by S. of Indianapolis . Pop . (19oo) 6836; (1910) 7738 . It is served by the Cincinnati, Hamilton & Dayton, the Cleveland, Cincinnati, Chicago & St 963 s, Sarcoplasm . m, Bundle of fibrillae forming under the sarcolemma . Each is surrounded by a small quantity of sarcoplasm and in shape is an elongated ellipse . In most cases the muscle fibres do not branch, though in a few instances, such as the superficial muscles of the tongue, branching is found . Involuntary or Smooth Muscle (figs . 13 and 14).—This form of muscle tissue when separated into its single constituents is seen to consist of fibres possessing a typical long spindle shape . The central part is somewhat swollen and contains an elongated nucleus centrally placed . The ends of the fibres are drawn out and pointed sharply .

There is no definite surrounding membrane to each

cell . In most of the cells, especially the larger, a distinct longitudinal marking can be seen . This is due to the presence of the fibrils which run the length of the fibre and in all probability are the essential contractile elements . In most instances the cells are arranged with one another in a tissue to form bundles or sheets of contractile substance . In each bundle or sheet the cells are cemented to one another so that they may all act in unison . The cementing material is apparently of a membranous character and is so arranged that contiguous fibres are only separated by a single layer of membrane . According to some, neighbouring fibres are connected to one another by minute offshoots, and these communications serve to explain the manner in which the contractionisobserved to pass from fibre to fibre along a sheet composed of the muscles . Involuntary muscle is the variety of muscle tissue found in the walls of the hollow viscera, such as stomach, intestines, ureter, bladder, uterus, &c., and of the respir- atory passages, in the middle coats of arteries, in the skin and the muscular tra- beculae of the spleen . The arrangement is very typical, for in- stance, in the small intestine . Here the muscular coat consists of two layers of muscle . Each is in the form of a sheet which varies greatly in thickness in different animals . In the inner sheet the fibres, which are all parallel to one another, are disposed with their long axis transverse to the direction of the gut .

In the

outer layer, the direction of the fibres is at right angles to this . In a viscus with thick muscle walls the fibres are bound into bundles and the bundles may run in all directions . In some the intermediate substance is the sarcoplasm . In some muscles, apparently, each fibrilla is surrounded by a considerable amount of sarcoplasm, in which case the fibrillae are easily isolated from one another and can be readily examined . This is the case in the wing muscles of insects . The nuclei of the fibre are arranged close 964 Louis, the Fort Wayne, Cincinnati & Louisville railways, and by the Indianapolis & Cincinnati Traction line (electric) . It has a good water-power, and among its manufactures are wagons and carriages, axles, furniture, flour and electric signs . The water-works are owned and operated by the city . Connersville was first settled about the close of the war of 1812; was laid out in 1817 by John Conner, in whose honour it was named; and received a city charter in 1869 .