An Account of Three Cases, Viz. 1. of the Extraction and Depression of the Cataract in the Same Patient; 2. of an Encysted Hydrocele of the Tunica Communis of the Spermatic Chord, Communicating with the Tunica Vaginalis Testis; and 3. of an Amputation below the Knee, the Event of Which Shows That the Advantages of the Union by the First Intention, after Such an Operation, Are as Easily Obtained in the Leg as in the Thigh.