JF Ptak Science Books Quick Post
On the heals of two water-related posts in the last two days (one of the waterless Jornada del Muerto in New Mexico and the other on the well at the Turin citadel as a reverse-tower) comes this fine image of a geological/hydrological cross section of London, from the Illustrated London News for July 20, 1929.
All elements of this collage are very (screen-filling) clickable, and sharp:
Comments