More adventure than science, a kind of mix of the Hardy Boys and Tom Swift.
A British army captain, on leave from West Africa, meets a pretty girl and a strange carved head that leads them both into deadly adventures. Nothing deep, but a pretty good page turner.
A rather poignant story about a group of space-mad youths and what happened to them, with all the individualism and do-it-yourself gusto of the 1950s and '60s. It's a decent tale if you can ignore the obsolete science and economics, and resist the idea that the "bubbs" (space habitats) might just as well be covered wagons.
Wow! This is some mystery. Densely and complexly plotted; full of complications, interesting characters, layered secrets and nefarious schemes; fast paced — a real page turner. It begins with a burglary and a runaway marriage and progresses through blackmail, murder and trumped-up accusation. Heiresses, hidden identities and disguised detectives all feature. There's some thwarted romance, for good measure.
Some of the plot devices have become cliches since 1882, but probably hadn't when this was written, and anyway, there are so many things going on, it doesn't matter — you won't puzzle them all out till the very end.