Apart from the clues themselves, you can sometimes deduce some details
just by considering how they're numbered. Typical rules are:
* Each clue is for a word/phrase of at least two letters.
* The clues are identified by numbering the squares that begin a
word/phrase, in order from top row to bottom row, and (within
each row) left column to right column.
* The pattern of black and white squares is symmetric when rotated 180
degrees.
* Each white square is part of both an Across and a Down clue.
Unfortunately, cryptic crosswords tend not to follow those last two,
which makes it a lot more challenging to approach them that way.
> Do you have any hunches or Guesses regarding the (specialized)
Subj. matter?
Googling 10 Across turns up
https://ur.booksc.me/book/49210446/1fcde3
where you can download a PDF that gives the grid (and, sure enough, it
doesn't follow those last two layout rules). And from what little I know
of the subject matter - _Finnegan's Wake_ by James Joyce - it seems to
be on a similar level of obscurity as these clues.
Another link provided within that PDF is
https://www.jstor.org/stable/25476364
and here's one for the next issue, which gives the solution:
https://www.jstor.org/stable/i25476366