Reactions to On the Origin of Species Saturday Review: argument confined to Geology, but has given me some perfectly just & severe raps on knuckles." In the third edition published on 30 April 1861, Darwin cited the "Saturday Review" article as reason to remove his calculation altogether. The December 1859 review in the British Unitarian "National Review" was written by Darwin's old friend William Carpenter, who was clear that only a world of "order, continuity, and progress" befitted an Omnipotent Deity and that "any theological objection" to a species of slug or a breed of dog deriving from a previous one was "simply absurd" dogma. He touched
On the Origin of Species America, Africa, and Australia all have regions with similar climates at similar latitudes, but those regions have very different plants and animals. The species found in one area of a continent are more closely allied with species found in other regions of that same continent than to species found on other continents. Darwin noted that barriers to migration played an important role in the differences between the species of different regions. The coastal sea life of the Atlantic and Pacific sides of Central America had almost no species in common even though the Isthmus of Panama was only a few