302 Dr. T. Goodey. Further Observations on 



Bacteria in Millions per Gramme. 





At 

 start. 



After 

 21 



days. 



After 

 43 



days. 



After 

 78 



days. 



After 

 104 

 days. 



After 

 154 

 days. 



After 

 190 

 days. 



After 

 223 

 days. 



After 

 293 

 days. 



After- 

 323 

 days. 



TJ 



20 



25 



24 



lost 



25 



21 



16 



21 



23 





t+w 



3 



130 



150 



100 



lost 



85 



91 



124 



lost 



106 



T + 5 per cent. U 





162 



96 



91 



lost 



66 



103 



120 



50 





T + F 





320 



323 



144 



136 



67 



63 



107 



56 





T + C 





603 



396 



154 



lost 



126 



87 



121 



105 





T + M 





595 



335 



209 



166 



131 



87 



111 



56 





Bacteria in Millions per Gramme. 



t 



After 

 23 days. 



After 

 58 days. 



After 

 84 days. 



After 

 134 days. 



After 

 170 days. 



After 

 203 days. 



After 

 273 days. 



T + A 



80 



151 



60 



53 



54 



58 



53 





Bacteria in Millions per Gramme. 





After 

 27 days. 



After 

 53 days. 



After 

 103 days. 



After 

 139 days. 



After 

 172 days. 



After 

 242 days. 



TH 2 



64 



82 



62 



64 



56 



63 



1. Inoculation of Treated with 5 'per Cent. Untreated Soil. 



I propose to deal first with the results obtained from the (T+5 per cent. U) 

 soil, as these are the most important. 



Fig. 2 shows the curves representing the bacterial counts for the untreated,, 

 the (T + W) and the (T+5 per cent. U) soils. It will be seen that the 

 (T+5 per cent. U) curve shows a sharp rise at 21 days, reaching a much 



E 



^180 

 c I20 



J 100 



"I 80 



i 20 



<D 

 O 



CQ 



I .V 



T+W 



Untreated 



O 21 43 



18 104 



154 



Days. 



Fig. 2. 



190 223 



293 323 



