1. 1889 Protozoa, III. Abth. Bronn's Klassen und Ordnungen des Thierreichs. Leipzig.
2. 1906 Paramecium aurelia and Paramecium caudatum. Biological Studies by the Pupils of William Thompson Sedgwick. 10 pp. Chicago.
3. THE PROTOZOAN LIFE CYCLE
4. 1909 Protozoölogy. 349 pp. New York and Philadelphia.