I also have this book and bought it this year by Googling the author/title.
It was reprinted in 1994 by Navrang publishers in New Delhi. I got it via
the Web from the following publisher of "Indological Publications", costs
$54 from them
I have no connection with the publisher at all. But as others have said,
ithe book is a really interesting and extraordinary source of information.
J. Penry Lewis left a fantastic legacy, full of interesting insights into
Ceylon life and highlighting the tragedies that accompanied colonial life -
so many lost children and curtailed lives.