(XIII) seemed probable that phenylmagnesium bromide would likewise add 1, 6 to fuchsone and to naphofuchsone. Despite numerous attempts, however, none of the readily crystallizing oxytetraarylmethanes could be isolated, only intractable gums resulting. Even on methylating these gums we could distil none of the pure methyl ethers from the products. The action of phenylmagnesium bromide on fuchsone and naphthofuchsone, therefore, is ...