Let us place side by side the eye of a vertebrate and that of a mollusc such as the common Pecten.
"Creative Evolution" by Henri Bergson
The United States produces small amounts of sapphires (in Montana) and pearls (from fresh-water molluscs).
"The Economic Aspect of Geology" by C. K. Leith
He too feeds on land molluscs.
"The Glow-Worm and Other Beetles" by Jean Henri Fabre
There are two principal types of molluscs which yield true pearls in commercial quantities.
"A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public" by Frank Bertram Wade
The numerous fishes of the period seem to have inhabited a sea little more various in its vegetation than in its molluscs.
"The Cruise of the Betsey" by Hugh Miller
Nor are Molluscs much more abundant.
"The Beauties of Nature" by Sir John Lubbock
In calm or gentle breezes, it is well to have ready a gauze net to seize the sea molluscs, whose number is considerable.
"Movement of the International Literary Exchanges, between France and North America from January 1845 to May, 1846" by Various
A Mollusc, in growing, makes his house grow with him.
"The Industries of Animals" by Frédéric Houssay
But I can't understand how a fine gentleman like you can care to talk to one of those molluscs.
"The Pond" by Carl Ewald
His creature lived as many mollusc men never live.
"Bye-Ways" by Robert Smythe Hichens