19. 
20. 
21. 
INDEX TO LITERATURE. 
. Atwoop, Wiii1aAm B. Crown-gall. Third Report of the State Entomologist, 
Virginia, 1901, 33 pp. and 10 pls. 
Some observations on crown-gall of apple trees. Bulletin 140, Va. Aer. 
Expt. Sta., 1902, pp. 187-212 and 10 figs. 
Injurious insects and plant diseases. Special Bulletin 45, Va. Aer. 
Expt. Sta., Aug., 1904, pp. 17-20 and figs. 19-22. 
Apple crown-gall. Rept., Md. State Hort. Soc., vol. 7, 1905, p. 114. 
. Barney, L. H. Root galls. Bulletin 117, N. Y. (Cornell) Agr. Expt. Sta., 1896, 
pp. 367-875 and fig. 131; also Ninth Annual Report of same station, 1897, pp. 
425-434. 
. Beacnu, 8S. A., Lows, V. H., and Strwart, F.C. Common diseases and insects 
injurious to fruits. Bulletin 176, N. Y. (Geneva) Agr. Expt. Sta., 1899, pp. 
417, 418, and 439. 
. Butz, GEorGE C. Crown-gall. Rept., Pa. State College, 1901-1902, pp. 405- 
412 and 1 pl., 1902. 
. Cuinton, G. P. Report of the botanist. Crown-gall. Rept., Conn. Agr. Expt. 
Sta., 1904, pp. 299, 309, 338, 346, and 354 and pl. 24. 
. Dover, G. M. Root-knot on apple trees. Insect Life, vol. 2, 1890, p. 315. 
. Forses, 8. A. The crown-gall as a nursery pest. Trans., Ill. State Hort. Soc., 
vol. 34, 1900, pp. 1386-150 and pls. 1-4. 
Entomological notes and inspection report for 1901. The crown-gall. 
Trans., Ill. State Hort. Soc., vol. 35, 1902, pp. 150-154. 
The crown-gall. Report of the State Entomologist, Illinois, vol. 22, 
1903, pp. 108-110 and 1 pl. 
Report of inspection and insecticide operations. Crowngall in nur- 
series. Trans., Ill. State Hort. Soc., vol. 37, 1904, pp. 229-232. 
. FranxK, A. B. Die Krankheiten der Pflanzen, vol. 3, 1896, pp. 316-318. 
. GARMAN, H. Diseases of nursery stock. Crown-gall. Bulletin 93, Ky. Agr. 
Expt. Sta., 1901, pp. 104-106 and figs. 1-3. 
Diseases of nursery stock. A knot disease of apple trees. Bulletin 93, 
Ky. Agr. Expt. Sta., 1901, pp. 106-107 and fig. 4. 
. GuitrorD, W. H. Root-galls. Rept., lowa State Hort. Soc., vol. 36, 1902, 
p. 025. 
. Hepecock, GEORGE G. Some of the results of three years’ experiments with 
crown-gall. Science, n.s., vol. 22, 1905, pp. 120-121; also National Nurseryman, 
vol. 13, Aug., 1905, p. 129; also American fruits, vol. 3, 1905, p. 75. 
The crown-gall and hairy-root diseases of the apple tree. Bulletin 
90, pt. 2, Bureau of Plant Industry, U.S. Dept. of Agriculture, Nov., 1905, 7 
pp. and 3 pls. 
The crown-gall and hairy-root diseases of the apple tree. Rept., Va. 
State Hort. Soc., vol. 10, 1906, pp. 152-155. 
Prevention of apple crown-gall and hairy-root. National Nurseryman, 
vol. 15, 1907, pp. 192-193; also American Fruits, vol. 7, 1907, p. 69. 
186 93 
