544 



BOARD OF AGRICULTURE. [Jan. 



I-iy, 3. 



Fig. 3. a 



b. 



Cell from diseased root of cabbage, showing resting stage 



of Plasmodio2)ho7'a Brassicae, Woronin, the " club-foot " 



parasite. 

 Protoplasmic masses of P. brassicae emerging from the 



resting state, 

 c. Cell from scabby potato, showing resting stage of Spongo- 



sporaSokmi, Brunchorst, the supposed "scab" parasite. 

 a and b, after Woronin. a magnilied one hundred diameters, 



b magnified six himdred diameters, 

 c, after Brunchorst. Magnified one thousand diameters. 



