Last Monday marked the provisional end to the minor lake freeze for the current winter season. Small lakes like Katzensee in Zurich Nord were cleared for walking on for precisely two days. The low temperatures from 2 to 18 January 2009 raised hopes that it would freeze over.
Guillaume Henri Dufour: topographical map of Switzerland 1:100 000. page 8, Aarau, Lucerne, Zug, Zurich. (Printed in 1926)
The Dufour Map (surveyed and published at the behest of the Swiss Federal authorities, recorded under the supervision of General G.H. Dufour, first edition 1845–1865, updated until 1939) documents the settlement and landscape development of modern Switzerland in the
Lewis M. Rutherfurd: The Moon (New York, 1865)
Lewis Morris Rutherfurd (1816-1892) – sometimes also written Louis M. Rutherford – was a lawyer, astronomer and pioneering astrophotographer. He was regarded as a practically minded scientist, who was far more interested in new instruments and their usage than