deletions | additions       diff --git a/untitled.tex b/untitled.tex  index 5e314c7..58fefe6 100644  --- a/untitled.tex  +++ b/untitled.tex 
...
When we look to the individuals of the same variety or sub-variety of our older cultivated plants and animals, one of the first points which strikes us, is, that \textbf{they generally differ much more from each other}, than do the individuals of any one species or variety in a state of nature. There is, also, I think, some probability in the view propounded by Thomas Andrew Knight (\href{http://www.wikipedia.org/}{Wikipedia}), that this variability may be partly connected with excess of food. It seems pretty clear that  \begin{enumerate}  \item organic beings must be exposed during several generations to the new conditions of life to cause any appreciable amount of variation;  \item that when the organisation has once begun to vary, it generally continues to vary for many generations.  \end{enumerate}  No case is on record of a variable being ceasing to be variable under cultivation. Our oldest cultivated plants, such as wheat, still often yield new varieties: our oldest domesticated animals are still capable of rapid improvement or modification.