Add spaces between the words in the following text: TheyincludedabiographicalsketchbasedonthewritingsbytheEnglish-GermanphysiologistWilliamPreyer(1841-97),aprominentpopulariserofDarwin'sthoughtsinGermany.HansenandJrgensenprobablyfoundtheinformationonDarwin'slifeandcareerinPreyer's1869bookDerKampfumdasDaseins.Eightnewillustrationswereaddedtothework,fromanunknownsource,andthreeimagesfromDarwin'sCoralreefs(1842)[andsubsequentworks].
They included a biographical sketch based on the writings by the English-German physiologist William Preyer (1841-97), a prominent populariser of Darwin's thoughts in Germany. Hansen and Jrgensen probably found the information on Darwin's life and career in Preyer's 1869 book Der Kampf um das Daseins. Eight new illustrations were added to the work, from an unknown source, and three images from Darwin's Coral reefs (1842) [and subsequent works].