I'm glad you're enjoying the book, anyway, Mark.
Gyppo and Hilly have covered the punctuation issue. In a way it's OK that you've been reading for 50 years and not noticed this. It suggests that what you've been reading is sufficiently gripping and well-fashioned that you didn't have to notice the punctuation. Done properly, it shouldn't impose too much on your consciousness.
Making me wonder why, after 50 years, it was my book that drew your attention to it...