484 Bibliography 



conifers. Jour. Agr. Res. 15: 521. 1918. 400. Reddick, D., and 

 Gladwin, F. E., Powdery mildew of grapes and its control in the 

 United States. Int. Cong. Vit. San Francisco. 1915. 401. Collins, 

 J. F., Practical tree surgery. U. S. Dept. Agr. Yearbook 1913: 163. 

 1914. 402. Stone, G. E., Shade trees. Mass. Agr. Exp. Sta. Bui. 

 170. 1916. 403. Peets, E., Practical tree repair. McBride & 

 Co. 1916. 404. Schrenk, H. v., A disease of the white ash caused 

 by Polyporus fraxinophilus. U. S. Dept. Agr., B. P. I. Bui. 32. 

 1903. 405. Schrenk, H. v.. The hardy catalpa. U. S. Dept. Agr. 

 Bur. For. Bui. 37. 1902. 406. Kern, F. D., A biologic and tax- 

 onomic study of the genus Gymnosporangium. Bui. N. Y. Bot. 

 Card. 7: 391. 1911. 407. Schrenk, H. v.. White rot of the red 

 cedar. U. S. Dept. Agr. Div. Veg. Phys. & Path. Bui. 21. 1900. 

 408. Shear, C. L., et al., Endothia parasitica and related species. 

 U. S. Dept. Agr. Bui. 380. 1917. 409. Anderson, J. P., and Ran- 

 kin, W. H., Endothia canker of chestnut. N. Y. (Cornell) Agr. 

 Exp. Sta. Bui. 347. 1914. 410. Barss, H. P., A new filbert disease 

 in Oregon. Bien. Crop Pest and Hort. Rept. ^.- 213. 1915. 411. 

 Weir, J. R., and Hubert, E. E., A study of heart-rot in western 

 hemlock. IT. S. Dept. Agr. Bui. 722. 1918. 412. Stewart, V. B., 

 The leaf blotch of horse chestnut. N. Y. (Cornell) Agr. Exp. Sta. 

 Bui. 371. 1916. 413. Humphry, J. E., A hazel fungus. Mass. 

 (Amherst) Agr. Exp. Sta. Rept. 10: 242. 414. Schrenk, H. v., 

 A disease of the black locust. Mo. Bot. Gard. Rept. 12: 21. 1901. 

 415. Rand, F. V., Some diseases of pecans. Jour. Agr. Res. 4' 

 303. 1914. 416. Matz, J., Diseases and insect pests of the pecan. 

 Fla. Agr. Exp. Sta. Bui. I47. 1918. 417. Orton, W. A., and 

 Rand, F. V., Pecan rosette. Jour. Agr. Res. 3: 149. 1914. 418. 

 McMurran, S. M., Pecan rosette in relation to soil deficiencies. 

 U. S. Dept. Agr. Bui. 736. 1919. 419. Spaulding, P., The white- 

 pine blister rust. U. S. Dept. Agr. Farms'. Bui. 742. 1916. 420. 

 Spaulding, P., The blister rust of white pine. IT. S. Dept. Agr., 

 B. P. I. Bui. 206. 1911. 421. Schrenk, H. v., The bluing and the 

 red-rot of the western yellow pine with especial reference to the 

 black hills forest reserve. U. S. Dept. Agr., B. P. I. Bui. 36. 1903. 

 422. Hedgcock, G. G., and Hunt, N. R., Dothichiza populea in the 

 United -States. Myc. 8: 300. 1916. 423. McMurran, S. M., Wal- 



