The interesting lecture upon Celtic and Roman Britain, which was delivered last month at the London Institution by Mr Alfred Tylor, F.G.S., was illustrated by several drawings of curious antiquities. There was also shown a map prepared by the lecturer, which depicted all the Roman roads which at the present time still form important highways. A large number of these are seen upon this map to converge at Winchester, which at one time formed a central depôt for the metallurgical products of this country, before their dispersion abroad. From Winchester the metals won from the earth in Cornwall, Wales, &c., were carried to Beaulieu, in Hampshire, thence to the Solent, close by. Two miles across the Solent is Gurnard’s Bay, in the Isle of Wight, whence there was an easy road to the safe harbour of Brading, where the ores could be shipped for continental ports. It is believed, from the existence of so many British sepulchral mounds along these routes, that the roads were established and in constant use many centuries before the Roman occupation. The lecturer also referred to the curious Ogham inscriptions which are found nowhere except in the British Isles, and which are written in a kind of cipher of the simplest but most ingenious kind. A horizontal bar forms the backbone of this curious system of caligraphy. Five vertical strokes across this line would express the first five letters of an alphabet; the next five would be expressed by like lines kept above the horizontal bar, and five more by similar lines kept below it. Other five, making up a total of twenty signs, corresponding to a twenty-letter alphabet, are expressed by diagonal lines across the bar. This primitive method of writing is due to the Irish division of the Celtic race, and indicates a proof of early culture, which is seen in more enduring form in the artistic skill evident in such metallurgical work as has been assigned to the same period and people.