...plants have spread from one parent source. Hear his own statement concerning geographical distribution: ""We are thus brought to the question which has been...points of the earth's surface. Undoubtedly there are very many cases of extreme difficulty in understanding how the same species could possibly have migrated...

...the same should ever have been produced through natural selection from parents specifically distinct. We are thus brought to the question which has been...points of the earth's surface. Undoubtedly there are very many cases of extreme difficulty, in understanding how the same species could possibly have migrated...

...the same should ever have been produced through natural selection from parents specifically distinct. We are thus brought to the question which has been...points of the earth's surface. Undoubtedly there are very many cases of extreme difficulty, in understanding how the same species could possibly have migrated...

...been produced on one or mere points of the earth's surface. ' Undoubtedly there arc very many causes of extreme difficulty in understanding how the same...Nevertheless, the simplicity of the view that each species was produced within a single region captivates the mind. He who rejects it rejects the vera causa of ordinary...

...been produced on one or more points of the earth's surface. ' Undoubtedly there are very many causes of extreme difficulty in understanding how the same...Nevertheless, the simplicity of the view that each species was produced within a single region captivates the mind. He who rejects it rejects the vera causa of ordinary...

...source, as they had descended from the same progenitor," although " undoubtedly there are many causes of extreme difficulty in understanding how the same...several distant and isolated points where now found." For instance, " why do we not find a single animal common to Europe and Australia and South America...

...should have been produced from parents specifically distinct. Single Centres of supposed Creation. — We are thus brought to the question which has been...surface. Undoubtedly there are many cases of extreme 35 difficulty in understanding how the same species could possibly have migrated from some one point...

...limited geographical distribution of higher plants and animals. Darwin with his usual candour said1: "Undoubtedly there are many cases of extreme difficulty...several distant and isolated points where now found." He then went on to say : " Nevertheless the simplicity of the view that each species was first produced...

...the Pacific in the region of the abovementioned currents. Darwin (1) refers to the problem as to " whether species have been created at one or more points of the earth's surface," or whether species separated by many miles have " centres of creation." He says : " Undoubtedly there...

...been produced through natural selection from parents specifically distinct. We are thus brought to die question which has been largely discussed by naturalists,...points of the earth's surface. Undoubtedly there are very many cases of extreme difficulty, in understanding how the same species could possibly have migrated...