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Aug 29, 2010 · In the absence or scarcity of facts and observations as to varieties occurring among wild animals, this argument has had great weight with naturalists, and has led to a very general and somewhat prejudiced belief in the stability of species.
- Alfred Russel Wallace
- 2016
On the Tendency of Varieties to Depart Indefinitely From the Original Type (1858) By Alfred Russel Wallace. Transcribed and Edited by Charles H. Smith, Ph.D. This is the famous “Ternate essay” introducing natural selection that Wallace sent to Charles Darwin in early 1858.
- Alfred Russel Wallace
- 2016
On the Tendency of Varieties to Depart Indefinitely from the Original Type. The Struggle for Existence. The life of wild animals is a struggle for existence.
The four parts were united under one title to form the publication, Darwin, C. R. & Wallace, A. R. 1858. On the tendency of species to form varieties; and on the perpetuation of varieties and species by natural means of selection.
Wallace wrote his paper On The Tendency of Varieties to Depart Indefinitely from the Original Type at Ternate in February 1858 and sent it to Darwin with a request to send it on to Lyell.
- A. Radcliffe-Smith, Charles Darwin
- 1858
On the Tendency of Varieties to Depart Indefinitely from the Original Type. Alfred Russel Wallace. One of the strongest arguments which have been adduced to prove the original and permanent distinctness of species is, that varieties produced in a state of domesticity are more or less unstable, and often have a tendency, if left to themselves ...
May 15, 2005 · Wallace's 1858 paper ‘On the tendency of varieties to depart indefinitely from the original type’ is often thought to present a theory of natural selection identical with that of Darwin.
