MULDBJERG DWELLING PLACE—TROELS-SMITH 593 
Ficure 11.—Manufacture of drill points. The arrows indicate location of fracture. a, 
Blade chipped along one side; b, blade chipped along both sides; c, partly finished drill 
point; d, almost finished drill point; ¢, drill point showing signs of wear, and broken in 
use; f, drill point totally worn down. (Actual size.) (Drawings by A. Noll Sgrensen.) 
lived there during the summer, but in the winter one would think it 
an unpleasant place. But is there any possibility of learning what 
time of the year the island was inhabited? Yes; various things re- 
veal it: 
During the excavation of the culture layer about 700 willow and 
hazel twigs were found, all of them about 1 meter or more long (pl. 4, 
fig.1). They were placed together in 3 to 4 bundles, and apparently 
were collected for the purpose of making fish traps. Such plaited fish 
traps have been used up to the present time and are known as far back 
as about 5000 B.C. Cross sections of a great number of the twigs were 
examined by microscope (pl. 4, fig. 2), and all of them proved to be not 
quite 2 years old, as the youngest annual rings were not fully developed. 
Examination of the present growth of annual rings in similar plants 
during January to October makes it possible to determine at what time 
of year the twigs from the Muldbjerg dwelling place were cut, and 
proves that all the twigs must have been cut at the beginning of June. 
It has been mentioned earlier that fruit seeds of strawberry and 
raspberry were found at the dwelling place. In one case large quan- 
tities were found lying together and in such a way in the peat that 
there could be no doubt that they belonged to human excrement. 
Many of the somewhat larger raspberry seeds had been crushed be- 
