member and contributed to development of the Warsaw Scientific Society (he was a member since 19 January 1908). As Poland was under occupation in that time, this society played an important role in re-establishing Polish science in the years to come. The neurological laboratory at the Nencki Institute had rather humble origin. In the early 20th century, after settling in Warsaw, Flatau established in his private apartment, microscopy laboratory in the building where the fashion house of Herse was located on Marszałkowska 150 street. The anecdote about this laboratory is: "[A] carriage would take us to building on Marszalkowska Street, the same building where were mannequin ladies stood in shopping windows of House of Fashion of Boguslaw Herse (...) In this house lived, on the first floor, my uncle Edward Flatau, who – just like my father – was a neurologist and psychiatrist (...) There was a St. Bernard dog that had its idiosyncrasies. In the long, narrow room of the apartment stood, preserved in alcohol and covered, brains of animals and humans that uncle studied. At night, the St. Bernard used his paws to remove the cover and ate a brain, always just one. He was taking off the cover gently and quietly placed it on the table. Flatau would not detect it for several days because he did not work in the laboratory every day. Then he announced that St. Bernard would be thrown out (...). St. Bernard looked at my uncle with reproach and would leave the room in protest against these threats..." Subsequently, this laboratory moved on Jerozolimska Avenue 85 under auspices of the Psychological Society. In October 1911, Flatau donated to the Warsaw Scientific Society his neurological laboratory, along with the entire inventory and allowance of 2,000 rubles. In that time (1911), the Warsaw Scientific Society received as a gift from Józef Potocki, a house on Śniadeckich 8, where the laboratory was located. This is the same building where in 1913, Maria Skłodowska-Curie funded a radiology laboratory and was its honorary director. For many years, Flatau was the director of the neurological laboratory and was assisted by Teofil Simchowicz. According to Herman "Every day at 9 am, Flatau showed up in the neurobiological laboratory on Śniadecki 8 Street. Here, he was performing experiments on animals, reviewed the histology specimens, [and] collaborated with his colleagues. At 11 am, he would go for coffee at a nearby