18 The East Ant/Han Earthquake. 9. In the case of dislocation of walls and chimneys, the direction of fall or twist. 10. The superficial geology so far as known. Through the courtesy of Mr. A. E. Gibbs, an inquiry for particulars respecting the county of Hertfordshire was made public through the columns of the ' Herts Advertiser and St. Alban's Times ' of May 10th. The large accumulation of notes, letters, and newspaper cuttings secured through these various sources having been sorted and read, it was found necessary to at once open correspondence with many of the writers, in order to elicit further particulars, and, thanks to the assistance given by Mr. White, but few observers who appeared to have noticed any fact of importance, or who had failed to express them- selves with sufficient distinctness in the first place, escaped this form of application. It may be of interest to give here the numbers of the letters and post-cards which were finally received:— It is with much pleasure that I take the present oppor- tunity of thanking my numerous correspondents; and although space forbids the mention of each individual to whom I am indebted for information, furnished either directly or through Mr. Symons or Mr. White, I cannot pass over