1920] 



I VILLA MA N—SCL ERO TIN I A 



229 



of service to the fungus at subsequent periods by aiding the organ- 

 ism in acquiring a water supply. The production of pectinase is 

 postulated but not demonstrated. 



Dr. Sophia H. Eckerson, of the University of Chicago, very 

 kindly assisted the writer in the microchemical examination of the 

 mycelia for pectin. 



University of Minnesota 

 Minneapolis, Minn. 



1. 



2. 



LITERATURE CITED 



Association of Official Agricultural Chemists. Methods of Analysis. 

 Baltimore. 1916. 



Atkins, W. R. G., Some recent researches in plant physiology. London 

 and New York. 19 16. 



3. Beijerinck, M. W., and Van Delden, A., Arch. Neerl. Sc. Exact, et 

 Xaturell. 29:418-441. 1903; quoted in citation 10 below. 



4. Cooley, J. S., A study of the physiological relations of Sclerotinia cinerea 

 (Bon.) Schroter. Ann. Mo. Bot. Gard. 1:291-326. 1914- 



5. Czapek, F., Biochemie der Pflanzen. I. Jena. 1913. 



6. Hawkins, L. A., Some effects of the brown-rot fungus on the composition 

 of the peach. Amer. Jour. Bot. 2:71-81. 191 5. 



7. Schryver, S. B., and Haynes, D., The pectic substances of plants. 



Biochem. Jour. 10:539-547. 1916. 



8. Valleau, W. D., Varietal resistance of plums to brown-rot. Jour. 



Agric. Res. 5:365-395- I9*5- 



9. Willaman, J. J., The function of vitamins in the metabolism of Sclerotinia 



cinerea. Jour. Amer. Chem. Soc. 42:549-585. 1920. 

 10, Zunz, E., In Abderhalden's Biochemisches Handlexikon. Vol. 5, s. 562. 

 Berlin. 1911. 



