22 PROTECTION OF PLANTS — 1923-24 



128. — Norton, J. B. S. — Host limitations of S(;ptoria bycopersici. (Abstract) Pbytopathology, 7: 



65. F.1917. 

 129.— Norton, John Birting Smitb.— Internal action of cbemicals on resistance of tomatoes to leaf 



disease. Maryalnd Agric. Expt. Sta. Bui. 192, 17 30. Ja. 1916. 

 130.— Norton, J. B. S. — ^Metbods used in breeding asparagus for rust resistance. U. S. Dept. 



Agr., Bur. Plant Ind. Bui. 262. 1913. 

 131. — Neger, F. W. — Beitrage sur Biologic der Erysipbeen. 111. Der parasitismus der Mebltau 



pilze — eine Art von geduldeter Symbiose. (Contributions to tbe biology of the 



Erysipbacease. 111. The parasitism of the mildew fungi — a kind of tolerated 



sjonbiosis). Flora c.wi. 3, pp. 331 335, 1 fig. 1923. 

 132. — Orton, W. A.- — On tbe theory and practice of breeding disease resistant plants. Amer. 



Br. Assoc. 4: 144 146. 1908. 

 133.- — Orton, William Allen — Breeding for disease resistance in plants. Amer. Jour. Bot. 5: 



279 283. Je. 1918. 

 134.^0rton, C. R. and Alson, Otto. — Progress report upon resistance of commercial strains of 



tobacco to root rot. (Abstract) Phytopathology 14: 51. Ja. 1924. 

 135. — Orton, W. A. — Tbe wilt disease of cotton and its control. U. S. Dept. Agric. Div. Veg. 



Phys. Bui. 27: 5 16 pis. 4. 1900. 

 136. — Orton, W. A. and Webber, J. H.^ — Some diseases of tbe cowpea. U.S. Dept. Agr. Bur. PI. 



Ind. Bui. 17: 9 22, pis 6. 1902. 

 137. — Pritchard, F. J.— Development of wilt resistant tomatocs.^U. S. Dept. Agr. Bui. 1015. 



1922. 

 138. — Peltier, Geo. L. and Frederich, Wm. J. — Relative susceptibility of citrus plants to Clados- 



porium citri, Massce. Phytopathology 22. Ja. 1922. 

 139. — Peltier, George Leo. and Frederich, Wm. J.^ — Relative susceptibility of citrus canker on. 



different species and hybrids of tbe genus Citrus, including wild relatives. Jour 



Agr. Res. 19: 339 362. Jy. 15, 1920. 

 140. — Potter, Alden A. and Melchers, Leo E.- — The resistance of sorghum types to covered kernel 



smut. (Abstract)"." Phj-topatbology 8: 71. F". 1918. 

 141. — Pool, Venus Morel and McKav, Marion B. — Relation of stomatal movement to infection 



by Cercospora beticola. Jour. Agr. Res. 5; No. 22: 1011 1038. F. 28, 1916. 

 142. — Popp, M. — Hydrogenion concentration and natural immunity of plants. Centrabl. Bakt. 



33:707 719.1916. 

 143.— Quanjer, H. N.- — The resistance of dutch varieties of the Irish potato, to (taches en cou- 



ronne) and wart. Rev. Path. Veg. and Entomol. Agric. 10: 51 52. 1923. 

 144.— Redfield, C. L.— Producing disease resJstant plants. Amer. Bot. 29: 94 100, 1923. 

 145. — Reed, George M.^ — Varietal resistance and susceptibility of oats to powdery mildew, corn 



rust and smuts. Missouri Agric. Expt. feta. Res. Bui. 27, Jy. 1920. 

 146. — Reed, G. M. — Varietal resistance andsusceptibihtyof sorghumus to Sphacelotbeca sorgbi 



(Lint) Clinton, and Sphacelotbeca cruenta (Kubn) Potter. Mycologia, 24: 



132 143. 1923. 

 147. — Reed, George Matthews.- — ^Physiological specialization of parasitic fungi. — Memoirs Brook 



lyn Bot. Card. 1: 348 409. Jy. 1918. 

 148.- — Reed, G. M.^ — Infection experiments with tbe powdery mildew of wheat. Phytopathology, 



2;No. 2:81 87. 1912. 

 149. — Reddick, Donald.- — A hvbrid bean resistant to anthracnose and to mosaic. Pbytopatholbgy 



22, January 1922. 

 150. — Reddick, Donald and Stewart, V. B. — Varieties of beans susceptible to mosaic. Phytopa- 

 thology 8 : 530 534. Oct. 1918. 

 151." — Reimer, F. C- — Blight resistance in pears and pear stocks. Mo. BtiI. State Com. Hort. 



(California) 4; No. 3: 14o 149. Mar. 1918. 

 152.— Rummels, J. W.^ — Breeding a fusarium wilt resistant strain of cabbage Rept. Iowa State 



Hort. Soc. 50: 1915. 423 426, 1916. 

 lo3. — Rosenfield, Arthur H.- — Kavangire: Irorto Rico's Mosaic disease resisting cane, something 

 of its history and behaviour in the Argentine. Internat. Sugar Jour. 22: 26 33. 

 Ja. 1920. 

 154. — Russel, Edward John.- — The composition of potatoes immune from wart disease. Jour, of 



the Min. of Agric. Great Britain. 27: 49 51. Ap. 1920. 

 155.~ — Reddick, Donald and Stewart V. B.^ — Assitional varieties of beans susceptible to moasiac. 



Phytopathology 9 : 149 152. 1919. 

 156. — Roach, W. A.- — ^Studies in the varietal immunity to wart disease and the influence of the 



foliage on tbe tuber as shown by grafting. Ann. Appl. Biol. 10: 142 146. 1923. 

 157. — Reed, G. M. — Infection experiment with Erysiphe graminis DC. Trans. Wisconsin Acad. 

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