240 MAINE AGRICUIvTURAI, EXPERIMENT STATION. I913. 



the tongue half a minute or more. Plates were made and the 

 fungus was re-isolated in pure culture from the decaying tissues. 



Sets of 4 Bellflower apples were inoculated January 4, 1910, 

 with each of the following fungi: F I, II, III and IV from 

 apple, F XV from potato, and F XIV from diseased stem of 

 China aster. After 6 days all of the apples which had been 

 inoculated with the Fusarium forms from apples and with F 

 XV showed decay. The decayed area was about one cm. in 

 diameter in each case and no difference could be noted in the 

 rot caused by these fungi. The fungus from China aster did 

 not cause rot of apples. The appearance of some of the inocu- 

 lated apples is shown in Figure iii. As much difference could 

 be noted among the apples inoculated with a given fungus as 

 among those inoculated with the 5 fungi from different sources.- 

 The taste of the decayed tissue was slightly bitter in all of the 

 apples except those in which the decay was caused by F XV in 

 which no bitter taste could be detected. 



August 19, 1 910, 6 green apples were inoculated with each of 

 the following fungi ; F I, II, and III from apples, F XII, received 

 from Europe, as F. putrefaciens, and what was called F. oA-y- 

 sporum from each of 2 sources, F XV and XVI. On September 

 I all the apples showed some decay 'but in some cases the amount 

 differed considerably in the 6 apples inoculated with the same 

 fungus. F II caused less decay than the other fungi in this 

 set of inoculations. Figures 108 to no show the appearance of 

 the rot on a part of the apples. 



Fusarium forms from 16 sources, including strains, F j., F II, 

 F III, F XI, and F XII, from apple, F IX, from potato, F VII, 

 and F XX, from cucumber, F XXII from tomato, F V and F 

 VI from sweet corn, F VIII and F XVIII from wheat, F XIII 

 from sunflower, and F XIV from China aster, were used 

 December 9, 1910, in making inoculations of Greening apples. 

 All made some growth at the points of inoculation but this 

 variety seemed to be resistant to the attack of these fungi and 

 only a small part of the apples showed much decay. There was 

 considerable difference in some cases in the amount of decay in 

 different apples inoculated with the same fungus as has been 

 noted in other sets of inoculations. In this set of inoculations, 

 some of the fungi from other host plants caused as much decay 

 as fungi which had been isolated from apples. It was found 



