Carson began her career as an aquatic biologist in the U.S. Bureau of Fisheries, and became a full-time nature writer in the 1950s.

Chief among them lately is Enlow Fork, a principal feeder creek here, where Mr. Perry, an aquatic biologist, has done wildlife research for years.

Using plants like pondweed as a weapon to fight water pollution, an aquatic biologist in Idaho this week scored what appears to be a first: a patent on a lake.

In 1936 she became only the second woman to be hired by the Bureau of Fisheries for a full-time, professional position, as a junior aquatic biologist.

"The long-term effects of non-point source pollution have often been determined through chemical monitoring," says George Logan of Manchester, an aquatic biologist and the group's scientific adviser.

"And," he adds, as perhaps only an aquatic biologist could, "they're pretty."

But the carp has one redeeming quality, said Gregory E. Kozlowski, a senior aquatic biologist for the State Environmental Conservation Department.

Today's Columns A patent on a lake - it is apparently a first, scored by an aquatic biologist in Idaho.

When the money ran out, she hooked up as a "junior aquatic biologist" with what was later to become the Interior Department's Fish and Wildlife Service.

Previously he was an aquatic biologist for the United States Fish and Wildlife Service and studied fish in Chile.