xvi Journal of Proceedings. two instruments of this class are figured, one being larger and the other smaller than the Enfield example ; neither, however, exactly resembles in form the specimen here illustrated. Instruments of this class were doubtless used for light domestic work, for the manufacture of neat things in wood and bone, for skinning dead animals, and probably also for removing the flesh from the bones. It is difficult to quote an age for an instrument of this class. Stone was used for the manufacture of weapons and tools prior to the discovery of bronze and iron. The Bronze Age was passing or had passed away at the time of the Roman Conquest, and iron was coming into use. It is, however, certain that in places where metals were only procurable with difficulty stone remained in use for axes, adzes, knives, &c., long after the knowledge of bronze and iron was spread over Britain. Judging from its lightness, beauty, and precision of make, the Enfield celt or chisel probably belongs to a more recent period of the Neolithic Age. Some of these very neat tools were probably made and used by women and girls. Mr. Worthington Smith then read a paper entitled "Primeval Man in the Valley of the Lea" [see 'Transactions.'] The paper was illustrated with diagrams and specimens, the result of Mr. Smith's long-continued attention to the subject; the specimens in most cases were found by him- self, some in situ. The President said they had all listened—and no one more than him- self—with the very greatest interest to this paper, for Mr. Worthington Smith spoke with the authority of an investigator who had personally examined their river-gravels for many years ; and any one who had had the privilege of seeing his splendid collection of implements must know what a large amount of time and thought he had given to the subject. By his habit of labelling every specimen, and taking notes of the precise conditions under which each had been found, he had rendered a great service to the archaeological part of anthropology ; and they knew that all observers were agreed in giving to Mr. Smith the credit of being the most active and successful finder of these weapons in the London district. Mr. Smith had found weapons and tools of three distinct types ; he would like to ask whether there was any advancement of skill displayed in the three successive periods. He also desired to know whether Mr. Smith recognised the view put forward by Mr. Alfred Tylor, who introduced what he called the Pluvial Period immediately after the Glacial Period, and if so whether this would not take off something from the date of the river valleys by indicating that the rate of excavation was considerably more rapid then than at present. Those who were familiar with the speculations of Mr. Croll on the Glacial Period knew it was deduced from astronomical calculations that the necessary combination of events to bring about the last Glacial Period—for there had been several of them—occurred about two hundred and forty thousand years ago. If that calculation were correct, and if Mr. Croll's speculation were admitted, it seemed to fix some kind of date for Palaeolithic man, for they knew for certain that man was post-glacial, and there was some evidence to show that he was possibly pre-glacial in this country; he referred to Mr. Skertchley's