Note 94 — DISSERTATION IV.
Reading edition
It is most probable that many of the English words beginning with wh are from the same original as the Latin qui, quæ, quod; and both coeval with the Greek. Qui and who; quod and what; are from the same root, and a blending of the Greek και ο and και οτι. This supposition is strongly supported by the ancient Scotch orthography of what, where, &c. which was quhat, quhar.