Complex sentence: Baumgartel had spent much of her time in Berlin cataloguing the extensive collections of lithic artefacts in the city's museums, so after receiving her doctorate in 1927 she obtained a scholarship to study under the noted French lithicist Henri Breuil in Paris.
Split into simpler sentences: Baumgartel had spent much of her time in Berlin cataloguing the extensive collections of lithic artefacts in the city's museums. After receiving her doctorate in 1927, she thereofre obtained a scholarship to study under the noted French lithicist Henri Breuil in Paris.