192 FINDS ALONG THE CHINESE LIMES CH. XI
the men who were engaged in constructing and guarding this section of the Limes.
I need not here describe how we tracked the protective line farther through wastes of sand and rocky detritus to the border of Southern Mongolia. What has been told already of the Limes will suffice to show what great powers of systematic organization were needed for the rapid creation and continued protection of this passage for China's first advance into Central Asia. But the glimpses afforded of the forbidding ground over which this advance was successfully accomplished must also impress us with the magnitude of the human sufferings and sacrifices which the extension of the `Great Wall' and the subsequent bold enterprises of Han policy must have involved for the Chinese people.
IIIF Color HighRes
