Digital Library Search
![Figure 2 ship4003.jpg Figure 2](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_ship4003.jpg?itok=0x6Nwtj3)
Description
Figure 2. H. Fol and E. Sarasin photometer, 1884 model. Left: device closed.Right: Device opened. This instrument was used in 1885 to study the penetration of light in Lake Leman and after that in the Mediterranean. It was triedoff Cape Ferrat, France, in between 200 and 400 meters water depth. (Image credit: Oceanographic Museum of Monaco | Y. Berard)