

someone showed me a book with tons of old crochet pieces
like the caption says, i got hold of a very old book by a crochet instructor full of crochet pieces that were used as examples to choose from
most of them are filet crochet and i can mostly figure out how it would be done
but i’m very confused about these two. what kind of stitch is the curved part on the first picture?
the part on the second picture that looks somewhat like a net is confusing as well.
are they even crochet? those parts don’t look like any crochet stitches i’m aware of but the rest does
on the net part i can’t even identify individual stitches in general, it looks more like a continuous string that was sewn into that position. but that doesn’t really add up to everything else looking like crochet
help :D