| → far more easily than land-shells, across three or four hundred miles of open sea. 1859 1861 1866 | 
| far more easily than land- shells, across three or four hundred miles of open sea. 1860 | 
| across three or four hundred miles of open sea far more easily than land-shells. 1869 1872 | 
  | 
| → analogous facts. 1859 1860 1861 1866 | 
| nearly similar cases. 1869 | 
| nearly parallel cases. 1872 | 
  | 
| → animals of certain whole 1866 1869 1872 | 
| certain 1859 1860 1861 | 
  | 
| → animals belonging to other classes; thus 1866 | 
| the other inhabitants; 1859 1860 1861 | 
| other classes: thus 1869 | 
| other classes; thus 1872 | 
  | 
| → the 1859 1860 1861 1866 | 
| or recently took, the 1869 1872 | 
  | 
| → In the plants of the Galapagos Islands, 1859 1860 1861 1866 | 
| Turning to plants, 1869 1872 | 
  | 
| → the 1859 1860 1861 1866 | 
| in the Galapagos Islands the 1869 1872 | 
  | 
| → All such cases 1866 | 
| Such cases 1859 1860 1861 | 
| All such differences in number, and the absence of certain whole groups of animals and plants on islands, 1869 | 
| All such differences in number, and the absence of certain whole groups of animals and plants, 1872 | 
  | 
| → the 1859 1860 1861 1866 | 
| supposed differences in their 1869 | 
| supposed differences in the 1872 | 
  | 
| → of the islands; 1859 1860 1861 1866 1872 | 
| OMIT 1869 | 
  | 
| → is 1866 1869 1872 | 
| seems to me 1859 1860 1861 | 
  | 
| → seems to have been at least 1861 1866 | 
| I believe, has been at least 1859 1860 | 
| seems to have been fully 1869 1872 | 
  | 
| → mammals, 1859 1860 1861 1866 | 
| a single mammal, 1869 1872 | 
  | 
| → the adaptation of hooked seeds for transportal by 1859 1860 1861 1866 | 
| that hooked seeds are adapted for transportal in 1869 | 
| that hooks serve for the transportal of seeds in 1872 | 
  | 
| → This case presents no difficulty on my view, for 1859 1860 1861 1866 | 
| But 1869 1872 | 
  |