The temperature on August 15, 1869 was about 17.3 °C. The air pressure was 1 kgf/m2 and came mainly from the north. The airpressure was 77 cm mercury. The atmospheric humidity was 62%. Source: KNMI
From June 4, 1868 till January 4, 1871 the Netherlands had a cabinet Van Bosse - Fock with the prime ministers Mr. P.P. van Bosse (liberaal) and Mr. C. Fock (liberaal).
March 6 » Dmitri Mendeleev presents the first periodic table to the Russian Chemical Society.
April 6 » Celluloid is patented.
June 27 » The Republic of Ezo on the island of Hokkaido ends after being defeated by Japanese Imperial troops.
August 2 » Japan's Edo society class system is abolished as part of the Meiji Restoration reforms.
October 16 » The Cardiff Giant, one of the most famous American hoaxes, is "discovered".
November 6 » In New Brunswick, New Jersey, Rutgers College defeats Princeton University (then known as the College of New Jersey), 6–4, in the first official intercollegiate American football game.
Day of death May 30, 1951
The temperature on May 30, 1951 was between 4.9 °C and 16.2 °C and averaged 11.2 °C. There was 14.6 hours of sunshine (89%). The almost cloudless was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. Source: KNMI
From August 7, 1948 till March 15, 1951 the Netherlands had a cabinet Drees - Van Schaik with the prime ministers Dr. W. Drees (PvdA) and Mr. J.R.H. van Schaik (KVP).
In The Netherlands , there was from March 15, 1951 to September 2, 1952 the cabinet Drees I, with Dr. W. Drees (PvdA) as prime minister.
When copying data from this family tree, please include a reference to the origin: Hendrik de Graaf, "Family tree Plugboer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-plugboer/I3047.php : accessed March 6, 2026), "Klaas de Vries (1869-1951)".
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