Feb. 1903] Index to North American Mycology 
53 
Schaffner, John H. Laboratory Outlines for the Elementary 
Study of Plant Structures and Plant Functions from the 
Standpoint of Evolution. VIII, Bacteria; IX, Slime 
Moulds. Jour. Appl. Micr. and Lab. Meth. 5:1798-9. May 
1902. 
Schaffner, John H. Ohio Stations for Myriostoma. Jour. 
Mycol. 8:173. Dec. 1902. 
Schrenk, Hermann von. A Disease of the American Ash. 
[Polyporus fraxineus. Abstr.* of paper presented before 
Soc. PI. Morphol. and Phys.] Science, N. S. 15:406. 14 
March 1902. 
Schrenk, Hermann von. Decay of Timber and Methods of Pre¬ 
venting it. U. S. Dept. Agr., Bureau of Plant Industry, 
Bulletin 14:1-96. 18 pi. 25 March 1902. 
Schrenk, Hermann von. Notes on Diseases of Western Con- 
iferse. [Abstract.] Science, N. S. 16:138. 25 July 1902. 
Schrenk, Hermann von. On the Teaching of Vegetable Pathol¬ 
ogy. Bull. Torr. Bot. Club, 29:57-65. Feb. IQ02. 
Schrenk, Hermann von. A Root Rot of Apple trees caused by 
Thelephora galactina Fr. Bot. Gaz. 34:65. July 1902. 
Schrenk, Hermann von. Section G, Botany. [Abstract, A. A. 
A. S. papers, 9 mycological subjects.] Science, N. S. 16: 
136-140. 25 July 1902. 
Schrenk, Hermann von, and Spaulding, Perley. The Bitter Rot 
Disease of Apples. Science N. S. 16:669-670 21 Oct. 
1902. 
Schneider, Albert. Contributions to the Biology of Rhizobia. 
I. Rhizobium mutabile in Artificial Culture Media. Bot. 
Gaz. 34:109-113. 1 pi. Aug. 1902. 
Schneider, Albert. Vegetable Parasites [as Causes Modifying 
the characteristics of Vegetable Powders]. Powdered Vege¬ 
table Drugs, 40-4. 1902. 
Scleroderma pteridis Shear n. sp., growing attached to dead 
rhizomes of Pteris aquilina embedded in the earth. Bull. 
Torr. Bot. Club, 29:451. July 1902. 
Sclerospora graminicola (Sacc.) : Studies in Phycomycete 
Fertilization. [Abstract.] F. L. Stevens. Science, N. S. 
16:140. 25 July 1902. 
Sclerotinia fructigena. J. B. S. Norton. Science, N. S. 16:34. 
4 July 1902. 
Sclerotinia fructigena. J. B. S. Norton. Trans. Acad. Sci. St. 
Louis, 12:91-7. 4 pi. 25 Aug. 1902. 
