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Stinging pains under the false ribs on the left side which grow on lying down, on external pressure and on deep respiration with flashes of heat.

Dull pain under left false ribs.

We will, however, point out, in order to complete the series of muscles which form the abdominal wall, that the direction of its fibres is transverse, and that they extend from the internal surface of the cartilages of the false ribs, and the costiform processes of the lumbar vertebræ to the linea alba.

It is characterized by an elongated prominence which, starting from the iliac spine, is directed obliquely downwards and forwards, to terminate near the cartilaginous border of the false ribs.

False ribs, with their cartilages.—27.