About the average condition of wheat in Shantung during this dry season, and nearing maturity, is seen in Fig. 127, standing rather more than three feet high, as indicated by our umbrella between the rows. Beyond the wheat and to the right, grave mounds serrate the sky line, no hills being in sight, for we were in the broad plain built up from the sea between the two mountain islands forming the highlands of Shantung. On May 22nd we were in the fields north of Kiaochow, some sixty miles by rail west from Tsingtao, but within the neutral zone extending thirty miles back from the high water line of the bay of the same name. Here the Germans had built a broad macadam road after the best European type but over it were passing the vehicles of forty centuries seen in Figs. 128 and 129. It is doubtful if the resistance to travel experienced by these men on the better road was enough less than that on the old paths they had left to convince them that the cost of construction and maintenance would be worth while until vehicles and the price of labor change. It may appear strange that with a nation of so many millions and with so long a history, roads have persisted as little more than beaten foot-paths; but modern methods of transportation have remained physical impossibilities to every people until the science of the last century opened the way. Throughout their history the burdens of these people have been carried largely on foot, mostly on the feet of men, and of single men wherever the load could be advantageously divided. Animals have been supplemental burden bearers but, as with the men, they have carried the load directly on their own feet, the mode least disturbed by inequalities of road surface. For adaptability to the worst road conditions no vehicle equals the wheelbarrow, progressing by one wheel and two feet. No vehicle is used more in China, if the carrying pole is excepted, and no wheelbarrow in the world permits so high an efficiency of human power as the Chinese, as must be clear from Figs. 32 and 61, where nearly the whole load is balanced on the axle of a high, massive wheel with broad tire. A shoulder band from the handles of the barrow relieves the strain on the hands and, when the load or the road is heavy, men or animals may aid in drawing, or even, when the wind is favorable, it is not unusual to hoist a sail to gain propelling power. It is only in northern China, and then in the more level portions, where there are few or no canals, that carts have been extensively used, but are more difficult to manage on bad roads. Most of the heavy carts, especially those in Manchuria, seen in Fig. 203, have the wheels framed rigidly to the axle which revolves with them, the bearing being in the bed of the cart. But new carts of modern type are being introduced.