Recent Work on Virus Diseases in Plants

Doolittle Walker , Journ. Agr. Res., 1925, xxxi, 1.

Smith C. E. , Science, 1924, n.s., lx, 268.

Brandes , Journ. Agr. Bes. 1920, xix, 131.

Severin , Phytopath., 1924, xiv, 80.

Westerdijk , Med. Phytopath. Lab. Wille Commelin Scholten, 1910, i.

Elmer , Iowa Coll. Agr. Exp. Sta. Res. Bull. , 1925, 82; FERNOW, Cornell Univ. Agr. Exp. Sta. Memoir, 1925, 96.

Elmer , loc. cit., 1925; WALKER, Phytopath., 1925, xv, 543.

Allard , Journ. Agr. Res., 1917, x, 615.

Stahl Carsner , Journ. Econom. Entomol., 1923, xvi, 476.

Severin , Phytopath., 1921, xi, 424; SMITH and BONCQUET, Phytopath., 1915, v, 335.

Kunkel , Phytopath., 1926, xvi, 67 (abstract); Amer. Journ. Bot., 1926, xiii, 646.

McClintock Smith , Journ. Agr. Bes., 1918, xiv, 1.

Nelson , Michigan Agr. Exp. Sta., Bot. Tech. Bull., 1922, 58.

Eckerson , Bot. Gaz., 1926, lxxxi, 204; JONES, Bot. Gaz., 1926, lxxxi, 446.

Olitsky , Science, n.s., 1924, lx, 593; Journ. Exp. Med., 1925, xli, 129 [16] MULVANIA, Science, n.s., 1925, lxii, 37; PURDY, Bot. Gaz., 1926, lxxxi, 210; GOLDSWORTHY, Phytopath., 1926, xvi, 873.

Tobacco Iwanoski , Ztschr. f. Pflanzenkrankh., 1903, xiii, 1; Palm, Bull. Deliproefstat. te Medan, Sumatra, 1922 xv, 1; Dickson, MacDonald Coll., Quebec, Tech. Bull., 1922, 2; Kunkel, 1924, v. sub. “Graminaceæ”; Rawlins and Johnson, Phytopath., 1924, xiv, 55 (abstract); Sorokin, Phytopath., 1926, xvi, 66. GRAMINACEÆ: Matz, Porto Bico Exp. Sta. Journ., 1919, iii, 65; Kunkel, Bull. Exp. Sta. Hawaiian Sugar Planters' Assoc, 1921, iii, 44; Ibid., 1924, iii, 115; Ibid., 1924, iii, pt. 2; Science, n.s., 1922, lv, 73; McKinney, Eckerson and Webb, Journ. Agr. Bes., 1923, xxvi, 605. POTATO: Smith, K., Ann. Bot., 1924, xxxviii, 385.

Johnson , Phytopath., 1926, xvi, 745.

Walker , Phytopath., 1926, xvi, 431.

Dickson , Science, n.s., 1925, lxii, 398.

Allard , Journ. Agr. lies., 1916, vi, 649.

Mulvania , Phytopath., 1926, xvi, 853.

Doolittle , U.S. Dept. Agr. Bull., 1920, 879.

e.g., Chapman , Mass. Exp. Sta. Pub. Doc., 1908, 31; and Ibid., Pub. Doc, 1913, 31; WOODS, U.S. Dept. Agr. Bull, 1902, 18.

Allard , U.S. Dept. Agr. Bull., 1914, 40.

Quanjer , Inter. Pot. Conf. Bept. Boy. Hort. Soc, 1922, 127.

as in 7.

Johnson , Phytopath., 1921, xi, 446; and Ibid., 1922, xii, 438; Goss, Nebraska Exp. Sta. Bull., 1924, 26; Goss and PELTIER, Ibid., 1925, 29; TOMPKINS, Phytopath., 1926, xvi, 581.

Johnson , Wisconsin Univ. Agr. Exp. Sta. Bes. Bull., 1925, 63.

Carsner , Phytopath., 1925, xv, 745.

Johnson , Science, n.s., 1926, lxiv, 210.

Schultz , Science, n.s., 1925, lxii, 571.

See Duggar Armstrong , Ann. Missouri Bot. Gard., 1923, x, 191: MULVANIA, Phytopath., 1926, xvi, 853; JOHNSON, Phytopath. 1926, xvi, 745.