The Collaborative International Dictionary of English v.0.48:

Hariolation \Har`i*o*la"tion\ (h[a^]r`[i^]*[-o]*l[=a]"sh[u^]n),
   n. [See Ariolation.]
   Prognostication; soothsaying. [Obs.] --Cockeram.
   [1913 Webster]