436 Profs. Percy Frankland and Marshall Ward. 



Here the doubling period was : 



56112 fj. = 8.33 P.M. 9.49 P.M. = 76 minutes at 1818 '117 '5 C. 



On November 17 spores sown as before, remained at 22 C., from 

 10.30 A.M. till 3.45, and were then put in at 19'5 C. 

 Doubling period : 



81-0162 n = 4.5 P.M. 5.16P.M. = 71 minutes at 19 '8 19 '6 19 -719 '3 C. 

 162 -0324 = 5.16 6.26 = 70 19 '318 '7519 -5 C. 



Calculated back : 



459-0229 -5 M = 5.49 P.M. 7.11 P.M. = 82 minutes at 19 18 '75 19'5 C. 

 229-5 114-5 = 4.37 5.49 =72 19 '7 19 C. 



Normal doubling period : 



91 -0182 -0 /x = 4.15 P.M. 5.26 P.M. = 71 m. at 19 '719 '619 -719 -619 -3C. 

 182-0 364-0 ,, = 5.26 6.41 =75 19 -3 18 -75 19 -5 C. 



On December 8 spores were sown in normal gelatine at 11 A.M., and 

 put into the incubator at 22 C. till 2.30 P.M. 



Curve 134, p. 434. 



The normal doubling periods : 



35 70 n = 3.0 P.M. 4.10 P.M. = 70 minutes at 19 '018 '5 19 '0 C. 

 70140 = 4.10 5.18 = 68 19 -018 '919 -4 C. 

 140280 = 5.18 6.21 =63 19 '4 19 '6 19 -25 19 -3C. 



On comparing these periods with those of November 17, it will be 

 seen how admirably the agreement comes out, and farther shows that 



