"Case" The longitudinal separation on either side of the upper half by the suture marks the anterior portion of the spermaceti' case. The case occupies the whole upper third of its head, + extends from the tip of its svent back to back nearly to a point opposite the eye - the case nar- rows gradually from back to front + is entirely covered by sinews, about 1 cent, wide, which run longitudinally. These sinew-ropes are many layers deep + not stretched very tightly. The methods of opening the case was to strip off the sinew-ropes until nearly the bottom layer had been reached. Then a trough was laid having one end at the head & the other in its tail. The "head-end" was. The case was then plugged by a whale-knife + the oil started to run out - The spermaceti' was thin enough to run freely & the case contained all thru' it jelly-like masses in with the free oil - these masses were picked out with the knife. Where all the oil had run out which could be gotten from this one section, the cut was made larger & the oil + jelly-like masses, run & bailed out from the remainder of the case