The Collaborative International Dictionary of English v.0.48:

Apprecation \Ap`pre*ca"tion\, n. [L. apprecari to pray to; ad +
   precari to pray, prex, precis, prayer.]
   Earnest prayer; devout wish. [Obs.]
   [1913 Webster]

         A solemn apprecation of good success.    --Bp. Hall.
   [1913 Webster]