Very good defense of his thesis on Melanesian Pidgin. He's wordy, as befits (perhaps) an anthropologist. As one reviewer (Holm, JPCL 5:1) expressed it thus: "...one might have expected a map or two to help northerners to appreciate the full impact" of certain sentences.
He has tons of sentences he's worked through to prove his point, and I just love the sound of both Tok Pisin and Solomon Islands Pidgin (Pijin). I also happen to have the 6:1 copy of JPCL in which he uses another text just unearthed (1989-90) to prove his point about a nautical pidgin being around a full 50 years earlier than (then) prevailing thought.
And for those keeping track, this is the first book I've spent money on in 2019, thus my 2019 goal of reading books I've already got and spending as little as possible. So my 2019 running total so far: $8. (not counting taxes)