|| Johannes Paulus Lotsy Dutch botanist 1867-1931. "Johannes Paulus Lotsy (April 11, 1867 - November 17, 1931) was a Dutch botanist, specializing in evolution and heredity. Lotsy was born in Dordrecht and died in Voorburg." Wikipedia. With Theodor Boveri's initial of ownership in the Kaiser Wilhelm Stamp front cover. Boveri's indication of author, title and year on front cover in his hand. Scarce offprint. First edition. Antiquarian science. Botany. * Staples little rusty, else very good.