250 
direction, ds, for instance, the Langaza Plain, the Struma Plain, 
the Butkova and Strumitza valleys. This orientation of the 
mountains, which is continued in western Asia Minor, has 
doubtless had considerable influence in the distribution of the 
by diluvium or a These rocks are entirely crystalline, 
consisting of various minerals in varying proportions, but wi 
quartz and mica inan he writer found crystals several 
ents are arranged in a foliated manner, and the result is a 
schist, generally a mica-schist. To the east and south-east of 
the town of Salonika is an outcrop of crystalline limestone. This 
stretches northwards nearly to Langaza Lake, and is quarried for 
road metal to make up the Seres Road and other roads in the 
immediate vicinity of Salonika. Mount Hortac is largely com- 
posed of this rock. 
To the east of the Gulf of Salonika the deltas of the Galiko 
and Vardar are formed of alluvium brought down by these 
rivers, and the Struma Plain (15 km. wide) is largely filled up 
with river-borne deposits. To the north-west of Salonika up to 
the lines of the “ Lembert Hills,’’ and further to the west for 
even soft de 
its tributaries, but even so 
the extensive diluvial deposits. 
e southern slopes of the “‘Lembert Hills” hard 
conglomerate ¢ aa tabhh 
| suet ae 2% he elgente of large, rounded, igneous pebbles 
