SPORT AND SCIENCE ON THE 
the Female Sea and the Male Sea respectively. 
The lakes are situated at an altitude of from 7,000 
to 7,500 feet, and lie in deep rock basins. 
There are many legends connected with them. 
One of these states that Mu Hai-tzi occupies 
the site of an ancient town, and it is said 
that on clear days in summer the ruins can be 
seen at the bottom of the lake. At the time of our 
visit the lakes were frozen over to a depth of 
several feet. The ice, however, was very clear, 
and near the edges weeds could easily be dis- 
cerned in the dark green depths. 
January 18 found us at Ning-wu Fu, which 
town has already been described in the foregoing 
chapter. We made a short stay here to check up 
and plot the compass traverse. 
On January 24 we left this city, and crossing 
a pass to the west descended on to an extensive 
plain, which stretches away, unbroken by any 
hills, as far as the Yellow River. 
Traversing this plain for about twenty miles, we 
reached a small town named Wu-tsai Hsien, 
where we settled down once more to continue our 
collecting work. 
This time we were very successful, for besides 
trapping, we induced the natives to bring in 
specimens. To the number ‘of different species 
already collected, eight others were added, includ- 
ing the wolf, the fox, the polecat, the mole, a 
vole, the desert hamster, the striped hamster, and 
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