blades 53 in. (14 cm.) j greatest breadth of ditto (at free end) 12 in. (3.17 cm.). Solid steel handles faced with ebony, furnished with shorl finger rests near the lock. One handle is divided into two by a jointed portion provided with a hook which fixes on to a travelling block attached to a gun-metal screw. On the inner side of the unjointed handle is fixed a " bed " in which the screw works with the block. The screw is turned by a steel cross-bar (not preserved) passed into the hole in the

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... rass knob a t the end of the unjointed handle. The blades are brought into apposition and the crushing power is high. German (Brunninghausen) lock, blades deeply grooved on the inner surface, so that a prominent spine runs longitudinally from tip to base. The pelvic curve, as usual with cephalotribes, is not strongly marked. Described and figured in the Catal. Obstet. Soc., 1866, p. 2 2 , and Fig. 18 , but this sample did not belong to the Society's museum. See also Ritchie, " On the Operation of Cephalotripsv as performed at I'ienna by Professor Braun," Tmns. Obstet. Soc., Vol. vi, 1864, p. 75, and PI. ii. The instrument here exhibited was originally the property of Dr. Greenhalgh or one of his predecessors when Physician-Accoucheur to St. Rartholomew's Hospital. " Leiter in Wien." Ends curved inwards with a short return curve. Sir Francis Champneys, Bt., 1913.