WART DISEASE OF POTATOS. 



is it necessary to know how long it takes to starve out the sporangia 

 where no potatos are grown, but also to see if the growing of immune 

 varieties starves them out sooner by causing them to germinate more 

 quickly. Experience may show that it is quicker to get rid of infection 

 by growing immune varieties than to keep the land free from potatos, 

 while it is certainly easier and allows the maximum of food to be 

 produced. 



BIBLIOGRAPHY OF WART DISEASE. 



1. Anon. Jour. Bd. Agr. xv. No. 9, p. 671 (Dec. 1908) (issued as Leaflet No. 105). 



2. Ibid. xvi. No. 9, p. 762 (Dec. 1909). 



3. Proc. under Dest. Insects and Pests Acts, 1 908-1 91 3 ; Ann. Reports 



Intelligence Div., Bd. Agr. and Fish. 1910, 1911, 1912, 1913, and 1914. 



4. Jour. Bd. Agr. xvii. No. 7, p. 556 (Oct. 1910). 



5. Ibid, xviii. No. 1, p. 42 (April 191 1). 



6. Leaflet 91, Dep. of Agr. and Tech. Instruction for Ireland, Feb. 1908. 



7. Leaflet 11, Board of Agr. for Scotland, Aug. 1913. 



j a. Abbey, G. Jour. Hort. 37, p. 463 (1898). 



8. Appel. Kaiserl. Biolog. Anst. f. Land u. Forstw., Flugblatt, Nr. 53, 1914 



(abs. in Zeit.f. Pflanzenkr., Bd. 25, p. 182, 1915). 



9. Arbeit d. Ges. z. Fordenrung des Baues u. . . . Kartoffeln Heft 15, 



1918 (abs. in Zeit. f. Pflanzenkr., Bd. 28, p. 343, 1918). 



10. Behla. Centr. f. Landw. Jg. 95, 191 5 (abs. in Cenir. j. Bakt., Bd. 47, 191 7). 



11. Borthwick, A. W. Notes. R.B.G. Edin. No. xviii. p. 115 (1907). 



12. Brick, xviii. Bericht u. d. Tatigkeit der . . . Pflanzenschutz. Hamburg, 



1916 (abs. in Zeit.f. Pflanzenkr., Bd. 27, p. 293, 1917). 



13. Carruthers, W. Jour. Roy. Agr. Soc. Eng. lxiii. p. 292 (1902). 



14. Ibid. lxiv. p. 305 (1903). 



15. Cooke, M. C. Jour. Roy. Hort. Soc. xxvii. pp. 815, cxliv (Aug. 5, 1902). 

 Ibid. p. cxcviii. (Nov. 4, 1902). 



16. Gard. Chron. xxxii. p. 124 (Aug. 16, 1902). 



17. Ibid, xxxii. p. 362 (Nov. 15, 1902). 



18. Ibid, xxxiii. p. 187 (March 21, 1903). 



19. Jour. Roy. Hort. Soc. xxviii. p. clxxviii (Oct. 13, 1903). 



20. Fungoid Pests of Cultivated Plants, p. 92 (1906). 



21. Cotton, A. D. Kew Bull. vol. 49, p. 272 (1916). 



22. Curtis, K. M. New Phytologist, vol. xviii. Nos. 3 & 4, 1919. 



23. Eastham, J. W. Year Book, Coll. Agr. and Hort., Holmes Chapel, p. 11 



(1904). 



24. Eriksson. Records presence of Wart Disease in Sweden, 1912 (quoted in 



Rome Bull. v. p. 277, 1914). 



25. Jour. Bd. Agr. vol. xxi. No. 2, 1919. 



26. Gough, G. C. Gard. Chron. May 18, 1918. 



27. Grosser. Zeit. der Landkammer f. u. d. Prov. Schlesien, 1909, p. 614 



(abs. in Centr. fur Bakt. Bd. 26, 1910). 



28. Gussow, H. T. Cent. Exp. Farm, Canada, Bull. 63 (Oct. 1909). 



29. Can. Dept. of Agr., Farmers' Circ, No. 1, 1912. 



30. Hammerlund, C. Swedish paper. Two line abs. in Zeit. f. Pflanzenkr. 



Bd. 27, 1917. 



31. Horne, A. S. Jour. R.H.S. vol. xxxvii. pt. ii, p. 362 (191 1). 



32. Jacobi. Hannov. Land. u. Forst. Zeit., Jg. 68, 1915. 



33. Johnson, T. . Sci. Proc. R. Dublin Soc. xii. (N.S.) No. 14, June 1909. 



34. Nature, Nov. 19, 1909. 



35. Josting, H. Deut. Landw. Presse, Jg. 35, p. 883, 1908. 



36. Ibid. Jg. 36, p. 725, 1909. 



37. Kock, G. Mitt, des Verbands der landw. Versuchsstation in Osterreich, 



1913, Nr. 20 (abs. in Zeit. f. Pflanzenkr. Bd. 25, p. 183, 1915). 

 37A. Lustner. Amtsb. d. Landw. Kamm. f. d. Regierungsbez. Wiesbaden, 97, 

 p. 238 (1915) (abs. in Centr. }. Bakt. 47, p. 562, 1917). 



38. Macdougall, R. S. Trans. Highland and Agr. Soc. of Scotland, Ser. 5, xv. 



p. 312 (1903). 



39. Magnus, P. Gard. Chron. xxxiii. p. 329 (May 23, 1903). 



40. ■ Jour. Roy. Hort. Soc. xxvii. p. clxxix (Oct. 13, 1903). 



41. Malthouse, G. T. Leaflet Harper Adams Agr. Coll., Aug. 8, 1908. 



42. Ibid. 2nd ed. (Oct. 1908). 



