Bui. 213, Bureau of Plant Industry, U. S. Dept^ of Agriculture. 



Plate XXXIV. 



(1 ) Sugar beet from Colorado, showing bacterial tubercles distinctfrom crown-garis, attacked 



by fungi, at x, x. 



(2) Sections of some of the upner nodules showing the central brownish water-soaked 



bacterial areas surrounded by white flesh. 



(3) The surface of one of the nodules much magnified, to show the small central rifts in the 



tissue, referred to in the text. 



