The temperature on July 6, 1860 was about 13.7 °C. There was 1 mm of rain. The air pressure was 12 kgf/m2 and came mainly from the north-northwest. The airpressure was 76 cm mercury. The atmospheric humidity was 80%. Source: KNMI
From March 18, 1858 till February 23, 1860 the Netherlands had a cabinet Rochussen - Van Bosse with the prime ministers J.J. Rochussen (conservatief-liberaal) and Mr. P.P. van Bosse (liberaal).
From February 23, 1860 till March 14, 1861 the Netherlands had a cabinet Van Hall - Van Heemstra with the prime ministers Mr. F.A. baron Van Hall (conservatief-liberaal) and Mr. S. baron Van Heemstra (liberaal).
When copying data from this family tree, please include a reference to the origin: B.H. Andreae, "Family tree Andreae", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-andreae/R297.php : accessed October 24, 2026), "Hendrik Gerrit Jan Hamer (1860-????)".
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