1921] 
WEBB—GERMINATION OF SPORES OF CERTAIN FUNGI 309 
TABLE VII (cont.) 
Hydrogen-ion concentration, Px Media 
Temp. |Hrs. 
1.4| 2.2] 2.6] 3.0| 4.1| 5.4| 6.4| 7.2| 8.8| 9.7| 10.04 E 
E 
6 |0.0| 0.0| 0.0/69.1| 36.3| 29.4| 62.5| 51.7, 55.0| 47.7| 36.5 e 
23° C.| 20 |0.0130.324.8/83.5| 51.4| 47.4| 74.0| 60.0| 60.0| 48.6| 53.7 5 
— 
6 |0.0| 0.0/51.3/52.8| 43.9] 43.7] 55.1] 64.4) 40.7, 43.9] 47.5 c 
27° C.| 20 |0.0| 0.0/81.1/85.2| 70.7| 56.5| 53.3| 65.0| 50.8| 55.2| 71.3 bw 
Q 
6 |0.0 21.6] 4 2, 26.5| 35.4| 15.3 0 E 
31? C.| 20 |0.0/13.0/12.5/30.0| 14.0] 11.9| 59.9| 47.4| 22.8| 19.6| 30.3 
8.6 z. 
EE 
6 |0.0| 0.0| 0.0} 2.0) 37.6| 38.5) 27.2| 24.1| 27.4] 22.3 10.0 | 8.2 ERS 
24? C.| 20 |0.0/13.7]20.0/27.1| 76.4| 76.6) 58.3| 68.5| 73.2| 41.2| 40.0 | 15.0 tn 
TABLE VIII 
COLLETOTRICHUM GOSSYPII. AVERAGE PERCENTAGES OF SPORE 
GERMINATION IN CERTAIN LIQUID CULTURE MEDIA AT DIFFER- 
ENT TEMPERATURES AND AT VARIOUS HYDROGEN-ION CON- 
CENTRATIONS 
Ta Hrs.| Hydrogen-ion concentration, Pa Media 
1.2| 1.8] 2.1| 2.6| 3.2| 3.7, 4.8| 6.0) 6.6) 7.2) 8.0, 8.2 | 9.0 
a4 
23? C.| 10 | 0.0} 0.0} 0.0) 0.018.5| 6.4/111.7/23.06/15.7/,116.9| 9.3/11.0 | 5.0 E 
27° C.| 10 | 0.0; 0.0} 0.0) 0.0) 5.2/111.1/12.1/12.6/14.3/117.5/10.412.7 | 4.0) G 
31? C.| 10 | 0.0| 0.0) 0.0) 0.0| 6.7116.6)21.2/17.6/18.7,18.3/18.0/29.0 [18.9 
1.6} 2.12.5 |3.0 |4.0 |5.5 | 6.6| 7.2| 7.6| 8.7| 9.1|10.04- 
| o 
a 
23? C.| 10 | 0.0} 0.0) 0.0) 0.0) 0.0/28. 3/14. 6121. 9/24. 7/25.3) 0.0] 0.0 £ 
27? C.| 10 | 0.0| 0.0| 0.0| 0.0) 0.0129. 4/21. 2/21 . 8/28. 4|24. 4/18. 0/13. 6 È 
31? C.| 10 | 0.0} 0.0; 0.0| 0.0| 0. 0/40. 2/27. 4/29. 8|27 . 5/30. 0/22. 3|14. 1 
1.5| 2.0| 2.5| 3.0] 3.6| 4.1| 5.1| 6.5| 7.0| 7.5| 8.4/9.0 | 9.8] 8 
5. 
23? C.| 10 | 0.0| 0.0) 0.0, 0.0; 0.0) 0.5| 8. 9/25. 3/25. 0/21. 9|27.3| 25.7/22.6 E 
27? C.| 10 | 0.0) 0.0| 0.0} 0.0] 0.0) 3.0/11.7,39.325.0/22.3]19.5| 24.1]35.2| 3 
31? C.| 10 | 0.0j 0.0j 0.0) 0.0) 0.0) 8.5/14.3/26.9/27.6/,27.4/32.6| 26.1/49.3 E 
