This odd animal, in a medium
conductor like water, strikes fish at several yards' distance, so
great is the power of its electric organ, the two principal surfaces
of which do not measure less than twenty-seven square feet. The next
day, April 12th, the Nautilus approached the Dutch coast, near the mouth
of the Maroni. There several groups of sea-cows herded together; they
were manatees, that, like the dugong and the stellera, belong to the
skenian order. These beautiful animals, peaceable and inoffensive, from
eighteen to twenty-one feet in length, weigh at least sixteen
hundredweight. I told Ned Land and Conseil that provident nature had
assigned an important role to these mammalia. Indeed, they, like the
seals, are designed to graze on the submarine prairies, and thus destroy
the accumulation of weed that obstructs the tropical rivers.
"And do you know," I added, "what has been the result since men have
almost entirely annihilated this useful race? That the putrefied weeds
have poisoned the air, and the poisoned air causes the yellow fever,
that desolates these beautiful countries.
Pages:
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478