166 



THE ROYAL SOCIETY OF CANADA 



Identity and Nature of the Forms Isolated 



The identity and nature of the forms isolated can be seen from 

 Table III, which includes a summary of the infection reactions of 

 each form on all the differential hosts. In order to illustrate the use 

 of this tabular summary, the data for two forms have been abstracted 

 from the table, and are given below, together with a summarized 

 description in words corresponding to the symbols used in the table. 



Character of infection on differential hosts 



Little Club 



Marquis 



Kanred 



Kota 



ArnaiJtka 



Mindum 



Speltz Marz 



Kubanka 



Acme 



Einkorn 



Emmer 



Khapli 



I Heavy normal infection. 



XV Heavy normal infection. 

 f I Heavy normal infection. 

 \ XV Heavy normal infection. 

 ( I Absolute immunity. 

 \ XV Heavy normal infection. 

 [- I Moderate susceptibility. 

 \ XV Moderate susceptibility. 



I Absolute immunity, chlorotic flecks. 



XV Heavy normal infection. 

 ( I Decided resistance. 

 )^ XV Heavy infection. 

 I I Decided resistance 

 \ XV Heavy infection. 



I Moderate susceptibility. 



XV Heavy infection. 

 r I Moderate susceptibility. 

 \ XV Moderate susceptibility. 

 J I Moderate susceptibility. 

 \ XV Moderate susceptibility. 



I Absolute immunity, chlorotic flecks. 



XV Heavy infection. 



I Very high resistance. 



XV Decided resistance. 



As will be seen in Table III, most of the forms were isolated and 

 identified several times from material of different collections. Since 

 the procedure was in principle the same in all cases it will be sufficient 

 to present here the records of one typical series of inoculations for 

 each form. These are given in Diagrams 1 to 14. An explanation 

 of the symbols used will be found under Diagram 1. 



