Megalithic Monuments of Brittany. 583 
Denmark and Sweden; some in Belgium and Holland, the Rhine 
country, and Western Germany ; none in Norway ; almost none in 
Italy; none in Eastern Europe. The city of Dresden marks 
about the dividing longitudinal line. 
They are found on the coast of Northern Africa, between 
Morocco and Tripoli; in Palestine, in Asia, in South and Central 
America, but not in North America. 
TUMULI. 
Many of the dolmens are now covered with earth, and these have 
been called tumuli. It is believed by those best qualified to judge, 
after the longest experience and closest examination, that all have 
at one time been so covered. One reason for this belief is, that it 
is universal to find the gallery, corridor or covered way, 
made of the same kind of stones in the same way, on the same level 
nd leading from the principal chamber, gradually narrowing in 
=< 
~ 
SS 
FIG. 4.—Section of a pasne In. the dolmen with its corridor or alley-waY 
and means of second interm 
both width and height to what would appear to have been the 
circumference of the tumulus. In this regard the dolmen now 
without a tumulus corresponds exactly with those covered by one. 
Some of these corridors are forty and fifty feet in length. In this 
way, the tomb could be covered, the monument completed and yet 
