It was at Lwanchow that we met the out-going tide of soy beans destined for Japan and Europe, pouring in from the surrounding country in gunny sacks brought on heavy carts drawn by large mules, as seen in Fig. 203, and enormous quantities had been stacked in the open along the tracks, with no shelter whatever, awaiting the arrival of trains to move them to export harbors.

The planting here, as elsewhere, is in rows, but not of one kind of grain.  Most frequently two rows of maize, kaoliang or millet alternated with the soy beans and usually not more than twenty-eight inches apart, sharp high ridge cultivation being the general practice.  Such planting secures the requisite sunshine with a larger number of plants on the field; it secures a continuous general distribution of the roots of the nitrogen-fixing soy beans in the soil of all the field every season, and permits the soil to be more continuously and more completely laid under tribute by the root systems.  In places where the stand of corn or millet was too open the gaps were filled with the soy beans.  Such a system of planting possibly permits a more immediate utilization of the nitrogen gathered from the soil air in the root nodules, as these die and undergo nitrification during the same season, while the crops are yet on the ground, and so far as phosphorus and potassium compounds are liberated by this decay, they too would become available to the crops.

The end of the day’s journey was at Shanhaikwan on the boundary between Chihli and Manchuria, the train stopping at 6:20 P. M. for the night.  Stepping upon the veranda from our room on the second floor of a Japanese inn in the early morning, there stood before us, sullen and grey, the eastern terminus of the Great Wall, winding fifteen hundred miles westward across twenty degrees of longitude, having endured through twenty-one centuries, the most stupendous piece of construction ever conceived by man and executed by a nation.  More than twenty feet thick at the base and than twelve feet on the top; rising fifteen to thirty feet above the ground with parapets along both faces and towers every two hundred yards rising twenty feet higher, it must have been, for its time and the methods of warfare then practiced, when defended by their thousands, the boldest and most efficient national defense ever constructed.  Nor in the economy of construction and maintenance has it ever been equalled.

Even if it be true that 20,000 masons toiled through ten years in its building, defended by 400,000 soldiers, fed by a commissariat of 20,000 more and supported by 30,000 others in the transport, quarry and potters’ service, she would then have been using less than eight tenths per cent of her population, on a basis of 60,000,000 at the time; while according to Edmond Théry’s estimate, the officers and soldiers of Europe today, in time of peace, constitute one per cent of a population of 400,000,000 of people, and these, at only one dollar