anatomy and physiology. To better understand his chronophotographic images, he compared them with images of the anatomy, skeleton, joints, and muscles of the same species. Marey produced a series of drawings showing a horse trotting and galloping, first in the flesh and then as a skeleton. The presence and activity of Marey in Naples is well documented, in particular thanks to the documentation preserved in the historical archive of the Stazione Zoologica Anton Dohrn. Marey began to travel to Naples presumably because of his relation with madame Vilbort, wife of Joseph Vilbort, the director of the French journal Le Globe. Madame Vilbort moved to Naples to cure her illness, thanks to the warm climate, and Marey followed her. Marey and madame Vilbort bought villa Maria in Posillipo in 1880. Marey accomplished in Naples part of his studies aimed at the realization of his pre-cinematographic tools and in the Dohrn zoological station studied the movement of fishes hosted in the aquarium's tanks. In a letter dated 1 November 1876 Marey requested the Stazione Zoologica to provide live ray fishes for his studies. Among the documentation that witnesses the collaboration of Marey with Anton Dohrn is the archive at the zoological station which preserves photos where the two appear together during an excursion and show Marey on board Dohrn's boat. The usage of the chronophotographic gun, which Marey used to aim at birds, but without shooting, appeared unusual to local people who referred to Maray sometimes as the "silly from Posillipo" ("lo scemo di Posillipo"). Chronophotography Marey's chronophotographic gun was made in 1882, this instrument was capable of taking 12 consecutive frames a second, with all the frames recorded on the same picture. Using these pictures he studied horses, birds, dogs, sheep, donkeys, elephants, fish, microscopic creatures, molluscs, insects, reptiles, etc. Some call it Marey's "animated zoo". Marey also conducted the famous study about cats always landing on their feet. He conducted very similar studies with a chicken and a dog and found that they could do almost the same. Marey also studied human locomotion. He published another book Le Mouvement in 1894. Marey also made movies. They were at a high speed (60 images per second) and of excellent image quality. His research on how to capture and display moving images helped the emerging field of cinematography. Towards the end of his life he returned to studying the movement of quite