My thanks to all those who caught this chapter's goofs.
Sigh.
Time to try a different word processor - again! - and hopefully this one can grammar check. Reliably.
Now, one of the aids for proof-reading is to render the text onto a coloured background so that it looks new and different, the intention being that you read the text afresh and thereby spot the issues.
Seems my colour-blindness really didn't help in that.
Next chapter I'll try proofing with an alternate font and different coloured background, and we'll see how that goes.
Anyhoo, there's a new version of Chapter Ten in the submission queue with lots of corrections in it, as 'donated' by the 'early adopters'.
Cheers to all...CH