I was mighty glad that our entrance into the interior of Caprona had been inside a submarine rather than in any other form of vessel. I could readily understand how it might have been that Caprona had been invaded in the past by venturesome navigators without word of it ever reaching the outside world, for I can assure you that only by submarine could man pass up that great sluggish river, alive.

[…] the 1927 Cinematograph Films Act's Canutish attempt to stem the tide with its quota system […]

He figured that, if it were another eephus, he'd have time to react.

Diatoms are characterized by a cell wall called a fistula made of silica, which usually has two overlapping sections.