c. The oyster, the size of an average pebble, has a coarser appearance,
a less even color, brilliantly whitish. It is a stubbornly closed world.
o. It can be opened however: you have to hold it in the hollow of a rag,
use a chipped, rather dull knife and go at it several times.
d. Curious fingers are cut, nails broken: it’s a rough job.