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63. Penzig, O. Funghi Agrumicoli. Michelia, vol. 2, December, 1882, pp. 385-498. 



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64. Prilleux, Ed., and Delacroix, G. Travaux du Laboratoire de Pathologie 



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65. Pringshelm, H. Die Variabilitat niederer Organismen, Berlin, 1910, 216 pp. 

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67. Saccardo, P. A. Sylloge fungorum, vol. 3, 1884, p. 699; vol. 10, 1892, p. 446; 



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68. Salmon, E. S. On Erysiphe grarninis DC. and its adaptive parasitism within the 



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69. Schneider-Orelli, O. Zur Kenntnis des mitteleuropaischen und des nordame- 



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70. Schrenk, Hermann von, and Spaulding, Perley. The bitter-rot of apples. 



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71. The bitter-rot fungus. Science, n. s., vol. 17, May 8, 1903, pp. 



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72. Schroeter, J. Pilze. In Cohn, F., Kryptogamen Flora von Schiesien, Bd. 3 



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73. Scott, W. M. The control of the apple bitter-rot. Bulletin 93, Bureau of Plant 



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74. Shear, C. L. Cranberry diseases. Bulletin 110, Bureau of Plant Industry, U. S 



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75. and Wood, Anna K. Ascogenous forms of Gloeosporium and Colleto- 

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76. Further studies of the anthracnoses. Science, n. s., vol. 29, February 12, 



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77. Sheldon, John L. Diseases of melons and cucumbers during 1903-1904. Bul- 



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78. — The asciferous stage of Gloeosporium psidii. Science, n. s., vol. 21, Jan- 



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79. Concerning the identity of the fungi causing an anthracnose of the sweet 



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80. The ripe rot or mummy disease of guavas. Bulletin 104, West Virginia 



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81. A study of the leaf-tip blight of Dracaena fragrans. Journal of Mycology, 



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252 



