The Third Report, of 1852-1854, contains the whole of this, "The Earthquake Catalogue of the British Association" (of which, through the liberality of that body, more than one hundred copies were distributed freely), in which are given, in columnar form, the following particulars, from the earliest known dates to the end of 1842: 1. The date and time of day, as nearly as recorded. 2. The locality or place of occurrence. 3. The direction, duration, and number of shocks so far recorded. 4. Phenomena connected with the sea--great sea-waves, tides, etc. 5. Phenomena connected with the land--meteorological phenomena preceding and succeeding. Secondary phenomena--all minor or remarkable phenomena recorded. 6. The authority for the record. Though most materially assisted by the previous labours and partial catalogues of Von Hoff, Cotte, Hoffman, Merrian, and, above all, of Perrey, the preparation of this catalogue--which demanded visits to the chief libraries of Europe, and the collating of some thousands of authors in various languages and of all time--was a work of great and sustained labour, which, except for my dear son's help, I should never have found time and power to complete. Professor Perrey, formerly of the Faculté des Sciences of Dijon, now _en retrait_, who has devoted a long and useful life to assiduous labours in connection with Seismology, was our great ally; and his catalogues are so large and complete for most known parts of the world after 1842, that we were able to arrest our own catalogue at that date, and take M. Perrey's as their continuation up to 1850. The whole British Association Catalogue thus embraces the long historic period of from 1606 B.C. of vulgar chronology, when the first known Earthquake is recorded, to A.D. 1850; and the base of induction which it presents as to the facts recorded extends to between 6,000 and 7,000 separate Earthquakes. My Fourth Report ("Reports, British Association, 1858,") is occupied principally with the discussion of this great catalogue, and with that of several special catalogues produced by other authors with limited areas or objects.