On due consideration, it is ordered that the opinion filed May 21, 1934, be amended by striking from the last two lines on page eight the following words: “which means that the frequency could be varied at will,” and substituting therefor the following: “which means, or was understood, we are told, by DeForest to mean, that by other simple adjustments the frequency of the oscillations could be varied at will.” The petition for rehearing is denied. Opinion reported as amended, ante, p. 1.