— 67 — 



With this mixture the soil in one of series pots was treated. 



The soil in the control series of pots was treated with a mixture of sterile 

 beef bouillon and Uschinsky's medium. 



In each of the pots, control and comaminalcd, an etjual number of turnip 

 seeds was carefully sown, and from that time onward the whole of the series 

 watered with sterile water. 



In ten days' time the 'plantlets were considered to have attained a suitabl'* 

 size for demonstration, and they were accoidingly photogra])hcd as shown in 

 figure 15. 



'.). — 'I'urnip plant inoculated in root with iiiliurc ohtui- 

 iipfl as for Fig. 8. (12 days after inoculation. 



Pots U and I\ contained contaminated soil. Pots I and 111 being the control. 



There is sufficient evidence in the results of this pi-eliminary trial to warrant 

 further investigation along these lines. ])articniarly n \ew of the economic im- 

 portance of this phase of the question. 



Bxpcriiiiriifs ■a'itli I'rcsJi I'egctahlcs. 



A large variety of fresh vegetables were cleaned, dried and then cut with 

 sterilised knives in slices of 'an average thickness of ;>4-i inch, placed in sterilised 

 Esmarch dishes and inoculated with one else of material from an agar culture. 



The results briefly noted are as follows : — 



Red Carrot. Softening and water-soaked appearance in 24 hours ; in a 

 week, rotted through and centre quite black ; a few flays later, rotting complete 

 and slimy. 



White Carrot. In 24 hours softening beginning, with water-soaked appear- 

 ance ; vascular circle bi'ownish ; action much the same as on red carrot. excejH 

 that the centre becomes dirtv white and not black. 



"^ 



