PLATE XXXIII 



Showing method of using rag doll in inoculations (a, b, c) and also (d) vial and 

 paper cylinder for soil inoculation: a, the rag doll unrolled in sterile Petri-dish, and 

 aseptic wheat seedlings in place, ready for inoculation; b, doll in place in tube 

 and seedlings growing; c, showing development of root hairs in condition for inocu- 

 lation below the doll; d, as stated above. 



