Early in 1915 during a short journey in Macedonia I took the opportunity of exploring the site and neighbourhood of Olynthus (Fig. 1), because it is hoped that the British School at Athens will before long be able to begin excavations there. I spent two days in the territory of Olynthus examining sites at Hagios Mamas, Myriophyton and Molivopyrgos as well as the ruins at Pizla, Magazudia and Palaioportes, all near Polygyros, which are those of mediaeval or modern villages. Although somewhat impeded by a heavy fall of snow I had the satisfaction of seeing for myself the comparative warmth of the climate of Olynthus even in winter. All about the reputed site of Olynthus the snow soon melted, whereas to the west beyond the village of Portaria towards the Kara Burun promontory, the snow remained for several days. The biting north-west Vardar wind which freezes the western end of Chalkidike in winter is kept off from Olynthus by the range of hills behind Polygyros, some of which are over three thousand feet high. Along the coast from Hagios Mamas to Molivopyrgos the territory of Olynthus is warm, faces south and is fertile, producing oil, corn, wine and silk. The low ground towards the coast is covered with olive groves, while the hills to the north are clothed with oak woods which were undoubtedly finer in antiquity than they are to-day. In most of the houses in Polygyros the doors and floors are of oak instead of the usual pine. These circumstances, coupled with the good anchorage at Molivopyrgos (the ancient Mekyberna), make it easy to understand the wealth and commercial importance of Olynthus. In addition to its other advantages, from Polygyros there runs the best road northwards into the upper country. Iron is said to be found in the hills and to-day mines of chrome and magnesite are worked along the coast.