THE CONSTRUCTION OF SENTENCES 177 with gw to wh. The conjunction ken, though, does the same. f. The third form of the second personal pronoun singular 'th not infrequently changes the initial of a verb beginning with d to the fourth state, and that of one beginning with g or gw to wh. It also some- times changes b to/. The exact usage of the mutations is not very clear, for even the older writers used them rather wildly, but the above rules are the general principles of them. There are valuable notes on their phonetic principles in Dr. Whitley Stokes's notes to St. Meriasek, and in a paper of additional notes which he published later. In the latest Cornish there was a tendency to use the second state after nearly anything, especially prepositions, except the few words which govern the other two mutations. M
