XII 
Journal of Agricultural Research 
voi.xi 
Page 
Fig. 11. A sketch of ring 1 made in August, 1915.. 216 
12. A detail map of ring 5 shown in the lower left-hand comer of the map.. 217 
13. A bisect and transect of an Agaricus tabularis ring at Akron, Colo_ 218 
14. A bisect of a ring of Agaricus tabularis in a wheat field in 1915. 230 
15. A sketch of the stages in the succession leading to the reestablishment 
of the short grass following its destruction by Agaricus tabularis .... 239 
RUN-OFF FROM THE DRAINED PRAIRIE LANDS OF SOUTHERN LOUISIANA 
Fig. i. Probable actual run-off for storm periods of from one to four days, Smith- 
port Planting Company tract and Willswood Plantation. 273 
2. Probable actual run-off for storm periods of from one to five days, La¬ 
fourche Drainage District No. 12 and New Orleans Land Company 
tract. 274 
3. Probable actual run-off for storm periods of from one to four days, Guey- 
dan Drainage District and Des Allemands Polder No. 1. 275 
4. Probable actual run-off for storm periods of from one to three days, Jef¬ 
ferson Drainage District No. 3 and Lafourche Drainage District No. 12. 276 
5. Composite curves for eight districts, showing probable run-off for storm 
periods of from one to four days. 277 
Diagnosing White-Pine Buster-Rust from its Myceuum 
Fig. 1. Cronartium ribicola: a, A moderately straight haustorium which has 
dented the side of the host nucleus, b, A branched haustorium in a 
young medullary-ray cell. 285 
Effect of Temperature Aeration and Humidity on Jonathan-Spot 
and Scald of Apples in Storage 
Fig. 1. Graphs showing the effect of temperature on Jonathan-spot at the end 
of 2, 6, and 8 weeks. 289 
2. Graphs showing the effect of temperature on Jonathan-spot at the end 
of 4, 5, 6, 7, 8, 10,12, and 14 weeks. 290 
3. Graphs showing the effect of temperature on Jonathan-spot at the end 
of 4, 6, 8, 10, and 12 weeks... 290 
4. Graphs showing the effect of temperature on Jonathan-spot at the end 
of 4, s, 6, 7, 8, 10, 12, and 14 weeks. 291 
5. Graphs showing the effect of temperature on Jonathan-spot at the end 
of 4, s, 6, 7, 8, 10, 12, and 14 weeks... 291 
6. Graphs showing the effect of aeration and humidity on Jonathan-spot.. 292 
7. Graphs showing the effect of the maturity of fruit on Jonathan-spot- 292 
8. Graphs showing the effect of maturity of fruit and of aeration and hu¬ 
midity on Jonathan-spot.. 293 
9. Graphs showing the effect of temperature on apple-scald at the end of 
9, 12, and 15 weeks. 295 
10. Graphs showing the effect of temperature on apple-scald at the end of 
6, 7, 9, 10, 13, and 15 weeks. 296 
11. Graphs showing the effect of temperature on apple-scald at the end of 
3» 4> 5> 6 > 1 > 9» IO > *4» *9 weeks. 296 
12. Graphs showing the effects of temperature on apple-scald at the end of 
6, 7, 8, 9, 11, 14, 15, 18, 21, and 23 weeks.. 297 
13. Graphs showing the effect of temperature on apple-scald at the end of 
4> 5* <5, 7, 8, 9, 12, 15, 16, 19, and 21 weeks. 297 
