

Inspection cf the coefficient values riven i*- 

 hrings out the fact that, for every one of the four funpi ^ 

 for each of the consecutive 24-hour observation periods, tl 

 lC-de,?ree temperat.ire coefficisnt for mycelial enlarrement is 

 greatest for the lowest temperature shown and regularly de- 

 creases toward higher temperatures, "becoming smallest for the 

 highest temperatures. The highest coefficient value hare 



encountered (30.0) is that for 13 c c . (range from 8° to IB ), 

 for the first 24-hours after inoculation for Phytophthora. 

 This value is progressively smaller for progressively higher 

 temperature, hecoming 0.47 for the temperature 31 ( ra.nge from 

 26 ° to 36°). For tJie temperature 13° (range from 8° to 18°) 

 the lowest coefficisnt value shown (4.0) is for the fourth 

 24-hour period for Phomope? s and this value is progressively 

 smaller for progressively higher temperatures, hecoming 0.5 for 

 the temperature 26° (range from 21° to 31° )• T ><e lowest co- 

 efficient value of the whole tahle is 0.01, for the temperature 

 310 (range from 26° to 36°) for the fourth 24-hour period for 

 "Phytophthora this value "being progressively larger with pro- 

 gressively lower temperatures and hec: 6.5 for the tempera- 

 ture 13° (range from 8° to 16°. 



Aside from the rerula:'- falling off in the coefficient 

 value for each period and fungus, as we pass? from lower to 

 ier temperatures, as gust pointed out, the value for any 

 anperature and fungus is always largest for the first 24 hour 

 period after inociT tion and generally tands to cecoa 

 with each successive period after the first, althougl 

 last statement is net always strictly true for all t . -*• 



s general truth appea-s to he that the t- . tl ~e coeffi- 



