The frontispiece shows two scientists at a table studying butterflies and a number of caterpillars.

"Scientists who spend their lives studying fungi or butterflies are finding that there's a new urgency to their work," he said.

An American biologist who studies butterflies simply said it smelled like his laboratory.

"So if a kid decides he wants to study butterflies in the Amazon, you can't say wait till Thursday when a computer is free."

"She did not believe he was studying butterflies, then."

During his time in various remote places he studied the local birds and butterflies.

Studying butterflies, they found similar results looking at hind and fore wings.

Military life was not for him as he much preferred studying butterflies and historical research.

They've worked all their lives as accountants or looked through microscopes or studied butterflies.

No, interest groups are found studying butterflies or playing ping pong or reading the same book and discussing it.