...mysteries, as one of our greatest philosophers has called it ; and on his return home it occurred to him, in 1837, that something might perhaps be made out on this question by patiently accumulating and reflecting on all sorts of facts which could possibly have any bearing upon it. After five years' work,...

...palaeontology of South America, which appeared to throw '' some light on the Origin of Species — that mystery of mysteries, as it has been called by one of our greatest philosophers."* After five years had elapsed in accumulating observations and reflecting upon them, he allowed himself...

...inhabitants of that continent. These facts seemed to me to throw some light on the origin of species — that mystery of mysteries, as it has been called by one...out on this question by patiently accumulating and reflecting on all sorts of facts which could possibly have any bearing on it. After five years' work...

...continent. Tb«se facts seemed to me to throw some light on the origin of specie« — that myctery of mysteries, as it has been called by one of our greatest philosophers. On ray return home, it occurred to me, in 1837, that something might perhaps be made out on this question...

...inhabitants of that continent. These facts seemed to me to throw some light on the origin of species — that mystery of mysteries, as it has been called by one...out on this question by patiently accumulating and reflecting on all sorts of facts which could possibly have any bearing on it. After five years' work...

...in the distribution of the organic beings inhabiting South America, and in the geological I'elations of the present to the past inhabitants of that continent....out on this question by patiently accumulating and reflecting on all sorts of facts which could possibly have any bearing on it. After five years' work...

...inhabitants of that continent. These facts seemed to throw some light on the origin of Species ; that mystery of mysteries, as it has been called by one of our greatest philosophers.' Thus are we enabled to fix a date for the first suggestion of that theory which appears in its full...

...inhabitants of that continent. These facts seemed to throw some light on the origin of Species ; that mystery of mysteries, as it has been called by one of our greatest philosophers.' Thus are we enabled to fix a date for the first suggestion of that theory which appears in its full...

...seemed to throw some light on the origin of species ; that mystery of mysteries, as it has been termed by one of our greatest philosophers. On my return...out on this question by patiently accumulating and reflecting upon all sorts of facts which could possibly have any bearing on it. After five years' work...

...la 18 ORIGIN OF SPECIES. INTRODUCTION. WHEN on board HMS 'Beagle,' as naturalist, I was much strr.ck with certain facts in the distribution of the organic...occurred to me, in 1837, that something might perhaps be 1 made'otit on this question by patiently accumulating and reflecting on nil sorts of facts which could...