Vincent Schaefer, the scientist who invented cloud-seeding, called him "one of the great naturalists."
And at the top of this fanciful ecological system, the greater and lesser writing naturalists.
But those who belonged to it are still easy to identify, because the phrase "great Victorian naturalist" always precedes their names.
"My uncle is a great naturalist," he said aloud.
"Most of the great naturalists came from the city," he said.
He was one of a half-dozen great naturalists to visit and work in South America during the nineteenth century.
Reaumur was also one of the great naturalists of his time.
And do let us know when you are back: I should like you to meet my husband, who is a great naturalist.
The surgeon was no great naturalist: asked, for example, whether he had seen the platypus he looked doubtful.
"They might be in denial, because they're both great naturalists."