in before: but he could call to Mind no such Instance; from whence he
concluded, that if she was let alone there would be no hopes at all, but
if he should be so fortunate as to find that Part, and find the
Impediment, there might be some hope. Upon this he resolv'd to open her
Breast and make enquiry; in order to which he provides himself with
sharp Flints, and Splinters of dry Cane almost like Knives, with which
he made an incision between the Ribs, and cutting through the Flesh,
came to the _Diaphragma_; which he finding very Tough and not easily
broken, assur'd himself, that such a Covering must needs belong to that
part which he lookt for, and that if he could once get through that, he
should find it. He met with some difficulty in his Work, because his
Instruments were none of the best, for he had none but such as were made
either of Flint or Cane.

§ 20. However, he sharpned 'em again and renewed his Attempt with all
the Skill he was Master of. At last he broke through, and the first part
he met with was the Lungs, which he at first sight mistook, for that
part which he search'd for, and turn'd 'em about this way and that way,
to see if he could find in them the cause of the Disease. He first
happen'd upon that Lobe which lay next the side [which he had open'd]
and when he perceiv'd that it did lean sideways, he was satisfy'd that
it was not the part he look'd for, because he was fully perswaded, that
that must needs be in the midst of the Body, as well in regard of
Latitude as Longitude. He proceeded in his search, till at last he found
the Heart, which when he saw closed with a very strong Cover, and
fastned with strong Ligaments, and covered by the Lungs on that side
which he had open'd; he began to say to himself. "If this part be so on
the other side as it is on this which I have open'd, then 'tis certainly
in the midst, and without doubt the same I look for; especially
considering the Conveniency of the Situation, the Comliness and