328 



L. D. DWINELL 



Figure 1. Apparatus for inoculating pine seedlings. Basidio- 

 spores of Cvonavtium fusiforme abjected from telia on oak leaves 

 (H) suspended over the internal ports (G) are carried by a 

 stream of moist air into the inoculation chamber (I) containing 

 the pine seedlings. Other components of the system are the air- 

 streams (A) to the humidification flasks (B) held in a constant 

 temperature (34 C) water bath (C) , air-mixing flasks (D) , cold 

 water bath (5-10 C) (E) , modified Nalgene "T's" (F) , Kramer- 

 Collins spore sampler (J) , and scanning tele-thermometer (K) . 



' 



