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Quote by Jean-Baptiste Lamarck

“It is not always the magnitude of the differences observed between species that must determine specific distinctions, but the constant preservation of those differences in reproduction.”

Author

Jean-Baptiste Lamarck

Jean-Baptiste Lamarck was a French naturalist and biologist, a key figure in the history of science. Born on August 1, 1744, in Bazentin, Oise, France, and died on December 18, 1829, in Paris, France. He is known for his contributions to the theory of evolution, particularly his theory of inheritance of acquired characteristics, which suggested that an organism could pass on traits acquired during its lifetime to its offspring. Although his theories are now considered outdated, they laid the groundwork for the modern understanding of evolution. more

“Each species may have had its origin in a single pair, or individual, where an individual was sufficient, and species may have been created in succession at such times and in such places as to enable them to multiply and endure for an appointed period, and occupy an appointed space on the globe.”

May Has Beens Science Individual Space Periods Species Endure Sufficient Pairs Globes Succession

Book:Principles of geology ; or, The modern changes of the earth and its inhabitants considered as illustrative of geology

Source: Principles of geology ; or, The modern changes of the earth and its inhabitants considered as illustrative of geology

“I long ago suggested the hypothesis, that in the basin of the Thames there are indications of a meeting in the Pleistocene period of a northern and southern fauna.”

Long Periods Meetings Southern Long Ago Hypothesis Indication Thames

Book:The Geological Evidence of the Antiquity of Man with an Outline of Glacial and Post-tertiary Geology and Remarks on the Origin of Species with Special Reference to Mans First Appearance on the Earth by Charles Lyell

Source: The Geological Evidence of the Antiquity of Man with an Outline of Glacial and Post-tertiary Geology and Remarks on the Origin of Species with Special Reference to Mans First Appearance on the Earth by Charles Lyell

“In the shallow parts of many Swiss lakes, where there is a depth of no more than from 5 to 15 feet of water, ancient wooden piles are observed at the bottom sometimes worn down to the surface of the mud, sometimes projecting slightly above it.”

Sometimes Water Feet Depth Bottom Ancient Surface Lakes Worn Shallow Mud Swiss Shallow Water

Book:The Geological Evidence of Man

Source: The Geological Evidence of Man

“It has long been a fact familiar to geologists, that, both on the east and west coasts of the central part of Scotland, there are lines of raised beaches, containing marine shells of the same species as those now inhabiting the neighbouring sea.”