NO. 8 PARASITES METCALF 35 



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No. 7, July. 



1922. The host-parasite method of investigation and some problems to 



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1922. Animal distribution and ancient distribution routes. Lectures 



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— 1923. The opalinid ciliate infusorians. Bull. 120, U. S. Nat. Mus., 



June 15. 

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Abstract in Anat. Record, Vol. 26, No. 5, Dec. 20. 

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bell-toads (Discoglossidae), with a criticism of the age and area hy- 

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— 1926. Larval stages in a protozoon. Proc. Nat. Acad. Sci., Vol. 12, 

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RuFFER, M. A. 1921. Paleopathology of Egypt. Univ. Chicago Press. 



ScHENCK, H. 1905. Ueber Flora und Vegetation von St. Paul und Neu Amster- 

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antarktischen Inseln inbesonders ueber Flora und Vegetation von Kerguelen. 

 Same reference as Schenck (1905). 



1907. Beitrage zur Kenntniss der Vegetation der Canarischen Inseln. 



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