Van Helmont's experiment, [46]

Villages, situation of, [24], [30], [126]

Wastes, [101], [104]

Water content of soil, [88-93]

Water, movement of in soils, [65-68]

Water supply and plant growth, [69-74]

Weathering, [116]

Weeds, [94], [97]

Woodland, [80], [101]