Marine Protozoa from Woods Hole: Bulletin of the United States Fish Commission 21:415-468, 1901

"Marine Protozoa from Woods Hole" by Gary N. Calkins is a scientific publication written in the early 20th century. This work focuses on the various species of marine protozoa found in the limited vicinity of Woods Hole, Massachusetts. It presents detailed observations and descriptions of 72 species, primarily from the group of aquatic microorganisms crucial for ecological balance and as sources of food for diverse marine organisms. The opening of the text outlines the context of the research, stating the scarcity of studies on marine protozoa in the United States at the time. Calkins explains his method of investigation, which took place over two months where he analyzed protozoa from the water and algae collected at a specific location. The text highlights not just the findings but also the classification challenges posed by comparing forms from Woods Hole to their European counterparts. The meticulous approach to collecting, observing, and documenting diverse species sets the framework for the scientific exploration and detailed taxonomy that the book promises to provide.