The Book of Household Management by Mrs. Beeton

759. A deep cut should, in the first place, be made quite down to the

bone, across the knuckle-end of the joint, along the line 1 to 2. This will let the gravy escape; and then it should be carved, in not too thick slices, along the whole length of the haunch, in the direction of the line from 4 to 3. [Illustration: LEG OF MUTTON.] LEG OF MUTTON.