DEAR MR. CASAUBON,—In the course of an investigation which my researches into the character of the Etruscan “Involuti” have necessitated, I frequently encounter the root _Kâd_, _k2âd_, or _Qâd_. Schnitzler’s recent and epoch-making discovery that _d_ in Etruscan = _b2_, has led me to consider it a plausible hypothesis that we may convert _Kâd_ or _Qâd_ into _Kab2_, in which case it is by no means beyond the range of a cautious conjecture that the Involuti are identical with the _Cab-iri_ (Cabiri). Though you will pardon me for confessing, what you already know, that I am not in all points an adherent to your ideas concerning a “Key to All Mythologies” (at least, as briefly set forth by you in Kuhn’s _Zeitung_), yet I am deeply impressed with this apparent opportunity of bridging the seemingly impassable gulf between Etrurian Religion and the comparatively clear and comprehensible systems of the Pelasgo-Phoenician peoples. That Kâd or Kâb can refer either (as in _Quatuor_) to a four-footed animal (quadruped, “quad”) or to a four-wheeled vehicle (_esseda_, Celtic _cab_) I cannot for a moment believe, though I understand that this theory has the support of Schrader, Penka, and Baunder. {125} Any information which your learning can procure, and your kind courtesy can supply, will be warmly welcomed and duly acknowledged.—Believe me, faithfully yours, JAMES FORTH. P.S.—I open this note, which was written from my dictation by my secretary, Mrs. Forth, to assure myself that her inexperience has been guilty of no error in matters of so much delicacy and importance. I have detected no mistake of moment, and begin to hope that the important step of matrimony to which I was guided by your example may not have been a rash experiment. * * * * * _From the Rev. Mr. Casaubon to James Forth_, _Esq._, _Professor of Etruscan_, _Oxford_.