to allow of

from The Collaborative International Dictionary of English v.0.48

Allow \Al*low"\, v. i.
   To admit; to concede; to make allowance or abatement.
   [1913 Webster]

         Allowing still for the different ways of making it.
                                                  --Addison.
   [1913 Webster]

   {To allow of}, to permit; to admit. --Shak.
      [1913 Webster]