A guide to the choice of a site for residential purposes : high-lying, dry sites remedial and preventive of disease, and promotive of health and the enjoyment of life, from the evidence of a wide range of eminent authorities in therapeutics, climatology, etc. : considerations founded on geological facts and the benefits derived from residence on high-lying sites on the chalk, which alone, of all sub-soils in the Home Counties, can always be relied upon for dryness, even in an elevated situation