Explore the meaning of Napoleon's renaming of the farm in Animal Farm.

This quote comes at the end of Napoleon's toast at the end
of the novel.  It is the culmination of the toast in which Napoelon further feeds the
praise of Pilkington's preceding toast.  Napoleon says that since there is no need for
it, he is going to move that the animals no longer refer to one another as "Comrade." 
This is symbolic because it shows that the revolution has come full circle.  The
aspirations and ideals that motivated the revolution have now been put aside for
something else that is more representative of the power that the pigs have over the
farm.  To this end, Napoleon divulges, at the end of the toast, that the name of the
farm is going to be changed one more time:

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... Napoleon was only now for the first time
announcing it- that the name "Animal Farm" had been abolished.  Henceforward the farm
was to be known as "The Manor Farm"- which, he believed, was the correct and original
name.

It is at this point
where Napoleon receives raucous applause and praise from the humans.  It is also at this
point where it becomes evident that the pigs' rule has come full circle.  The name of
the farm has gone back to the name that Jones gave it as the pigs now are the new vision
of "Jones."  The animals have swapped one form of opporession for another.  This is
evident in the new name of the farm.