Alexei Harlamoff Paris in 1869. In 1870 Tsarina Maria Alexandrovna bought one of Harlamoff's paintings. In April he sent his first letter from Paris to Saint Petersburg. He spent September and October of that year in Normandy and the southern Netherlands with Alexey Bogolyubov, C. Huhn, and A. Lavezzari. He also travelled to Brussels and to London, where he visited an exhibition of Old Masters. In November the Academy of Arts commissioned him to copy Rembrandt’s "Anatomy Lesson of Dr. Tulp", and he stayed in The Hague. From Spring 1871 to Autumn 1872 Harlamoff copied "The Anatomy Lesson of Dr. Tulp" in
Nicolaes Tulp the condition we know as migraine, the devastating effects of tobacco smoking on the lungs, and reveals an understanding of human psychology in a description of the placebo effect. Tulp also discovered the ileocecal valve at the junction of the large and small intestines, still known as Tulp's valve. While Tulp made observations of various diseases, treatment often continued in the age-old way. His description of the symptoms of Beriberi in a Dutch seaman, for example, went unnoticed until the cause (vitamin B1 deficiency) was recognized two hundred years later by Christiaan Eijkman. Partially as a result of the success