Books like Amazon Adventure

What a fantastic adventure. But... it was missing 2 vital things. But we'll get to that.I can't believe that this book was written before Google was around. I can't imagine the amount of research that went into this novel.It is fantastically educational. Every animal mentioned in the story I know a lot better now. And I know a ton of things about the Amazon that I'd never heard about before. It's a great adventure, as I mentioned before, and the ending was actually very exciting with quite a few interesting plot twists. But here's the things this story was missing:1) An emotional side. It was really hard to actually become worried about any of the dangerous things happening in this story, because it was difficult to be attached to any of the characters. I mean, most of the characters weren't even given names. Quite a lot of them were just referred to as "the Indians". However the named characters were characterised well, but not quite well enough. The second thing this novel is missing is 2) Any female characters whatsoever. Seriously. Here's the list of female characters that I spotted: "Mother" (characterised only by a single telegram), a boa constrictor, a tapir, and a manatee. That's it. (Girls could have made this story soo much better.)Other than this, the story was enjoyable and incredibly interesting. It has definitely made me appreciate more those crazy adventurers of the past who brought us so much knowledge about the animal world.