Engraving by Jan van der Heiden, first published in 1690, showing the building called the Bruinvis. The steam was caused by the water thrown upon the fire. Below, a plan of the houses shows where the hoses were laid. From 'Beschryving der nieuwlyks uitgevonden en geotrojeerde slang-brand-spuiten en haare wyze van brand-blusen' ('Fire engines with hoses and methods of fighting fires') by van der Heiden and his son Jan, (Amsterdam, 1735). Father and son were designers and manufacturers of Europe's best fire-fighting equipment and Fire-Masters General of Amsterdam. The book is the most important source of technical information for fire-fighting in the 17th and 18th century.
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