...Russell Wallace, a renowned English naturalist of the last century, noted in a paper published in 1855 that: "Every species has come into existence coincident...and time with a pre-existing closely allied species " Thirteen years later a German naturalist Moritz Wagner (1868) took Wallace's observations a step...

...longest. "^ In "On the Law Which Has Regulated the Introduction of New Species" of 1855. Wallace concluded that "every species has come into existence coincident...time with a pre-existing closely allied species." So new species arise through variations which enhance survival: "The superior variety would then alone...

...livelihood as a collector depended on it. In 1855 he got his first great insight, the "law," as he put it, that "every species has come into existence coincident...time with a pre-existing closely allied species." A year later he glimpsed a further remarkable fact: the presence in the Malay archipelago of "two distinct...

...Wallace had written a paper on geographical distribution (Wallace 1855), in which he claimed it a law that "Every species has come into existence coincident...and time with a pre-existing closely allied species" (186, 196). In the margin of his copy, Darwin wrote "nothing very new," "Uses my simile of tree—It...

...closely allied species are found in the same locality or in closely adjoining localities . . .' and 'every species has come into existence coincident...time with a pre-existing closely allied species'. In 1858 he suddenly intuited the selection theory without realising that Darwin had already done so,...

...each other in space and in time. And so Wallace summarized the appearance of new species in this law: 'Every species has come into existence coincident...time with a pre-existing closely allied species.' This way of stating his views was what Herschel called an empirical law, a description that summarizes...

...Sarawak essay ? Yes; for in the first edition of the Or. of Sp. he quoted therefrom Mr. Wallace's law that " Every species has come " into existence, coincident...time, with a " pre-existing closely allied species," adding — " And I now " know, from correspondence, that this coincidence he attri" butes to generation...

..."wherever it occurs." A conclusion to that effect would only corroborate the view advanced by Wallace: "that every species has come into existence coincident...and time with a pre-existing closely allied species" — with the typical form of Arisaema triphyllum in this particular case. We would at the same time...

...accounting for that local and temporal affinity of species which is expressed in Mr. AR Wallace's principle that ' Every species has come into existence coincident both in space and time with a pre-existing and closely allied species ',2 we shall not proceed otherwise than if the affinities of one particular...

...Professor Romanes draws attention. He states it in the words of Mr. Wallace, who lays down as a general law that " every species has come into existence coincident both in space and time with a pre-existing and closely allied species." This is a necessary consequence of natural evolution, but no reason can...