Popular Science Monthly (1875)
“ Jourdanet asserts his belief that, in countries where cold is not of itself an obstacle to life, rarefaction of the air will prevent the founding of durable states at a level higher than 4,000 metres. Chinese Wheelbarrows.—In commenting on an improved style of wheelbarrow, a correspondent of the Gardener's Chronicle praises the Chinese for the ingenuity they display in diminishing to the last degree the labor of the man who propels the barrow. The Chinese barrow has but one wheel, but it is large, and placed in the centre of the bed of the vehicle ”
