=6 MICRO-ORGANISMS AND DISEASE [chap. 



first cultivation, would after several cultivations be practically 



ost. But If this last cultivation should be found to act in 



the same manner pathogenically-/... if a small quantity of 



It, charged with the new brood of the organism, nevertheless 



. Fig. 2.— Heakson's Incubator. 



An e.ce,.e„t .c.t.o. Cor h,-ghe. .^pe..^, a. U po.e.es . ve., sensitive 



possesses full pathogenic power, then it is logical to sav 



hat this pathogenic property rests with the organism For 



this and other reasons it is of essential importance to be 



