736 RORERF MCCARRISON. 
cribed is much smaller in size than the Entamceba histo- 
ly tica of Schaudinn. 
Lister INSTITUTE, 
March 9th, 1909. 
REFERENCES. 
1. McCarrison.—* A Summary of Further Reseaches on the Attiology 
of Endemic Goitre,” ‘ Royal Society,’ B. vol. Ixxxi, 1909. 
2. Schaudinn.—‘ Arbeiten aus dem Kaiserlichen Gesundheitsamte,’ 
Bd. xix, Heft 3, 1903. 
3. Jurgens.—* Zur Kenntniss der Darm-amédben und der Amdben- 
Enteritis ” (Verdff, ‘ Peb. Militar-Sanititswesens,’ Heft 20). 
4. Wenyon, C. M.—* Observations on the Protozoa in the Intestines 
of Mice,” ‘Arch. Protistenk.,’ suppl. i, 1907. 
5. Dobell, C. C._—* Researches on the Intestinal Protozoa of Frogs and 
Toads,” ‘Quart. Journ. Micr. Sci., vol. 53, part 2, January, 1909. 
