Oct. 4, 1915-Mar. 27, 1916 
Illustrations 
XIII 
Page 
Plate XXXIX. Fig. 1.—A rotting area in an overripe fruit of S. D. No. 3. 
Fig. 2.—Tip of hypha in Opata plum. Fig. 3.—The edge of a rotting spot 
in a green fruit of Opata plum. Fig. 4.—Tissue of apple infected with 
Penicillium expansum. Fig. 5.—Cross sections of hyphse in tissue of Opata' 
plum 18 hours after inoculation. Fig. 6.—Portion of the rotted area of an 
Opata plum 18 hours after inoculation. 396 
Inheritance op Length of Pod in Certain Crosses 
Plate XL. Typical 5-seeded bean pods, showing the length of parents and 
crosses. 420 
A Honeycomb Heart-Rot op Oaks Caused by SterEum subpileatum 
Plate XLI. Fig. 1.— Quercus alba: A radial view of the honeycomb heart-rot 
produced by Stereum subpileatum, showing various stages of the rot. Fig. 
2.— Quercus alba: A radial view of the last (honeycomb) stage of the rot. 
Fig. 3.— Quercus alba: A tangential view of honeycomb-rot, showing early 
stage of delignification. Fig. 4.— Quercus velutina: A radial view of honey¬ 
comb heart-rot as it occurs in tops of trees, showing pockets filled with 
strands of cellulose. Fig. 5.— Quercus alba: A radial view of the honeycomb- 
rot, showing pockets lined with cellulose. Fig. 6.— Quercus alba: A cross- 
sectional view of the honeycomb heart-rot, showing pockets limited by large 
medullary rays. Fig. 7.— Quercus alba: Radial view of honeycomb heart- 
rot in branch, showing last stage of rot. Fig. 8.— Quercus lyrata: Radial 
view of honeycomb heart-rot in old log associated directly with the sporo- 
phores of S. subpileatum. Fig. 9.— Quercus texana: Sporophore of 5 . 
subpileatum . Fig. 10.— Qtiercus palustris: Sporophore of S. subpileatum , 
conchate form... 428 
Influence op Growth op Cowpeas upon Some Physical, Chemical, 
and Biological Properties 
Plate XLII. Experimental plots at Missouri Experiment Station: Fig. 1.— 
Plot D (right), unplowed, no crop, kept clean; plot E (center), unplowed, 
planted to cowpeas; plot F (left), plowed, planted to cowpeas. Fig. 
2.—Plot G (right), plowed, no crop, artificially shaded; plot H (left), 
plowed, no crop, kept clean... 448 
Angular Leap-Spot op Cucumbers 
Plate XLIII. Fig. 1.—Cucumber leaf eight days after inoculation with 
Bacterium lachrymans. Fig. 2.—Cucumber leaf 12 days after spraying with 
Bad. lachrymans . 476 
Plate XLIV. Cucumber stem diseased by Bacterium lachrymans . 476 
Plate XLV. Fig. 1.—Fragment of a cucumber leaf showing angular leaf-spots 
due to pure-culture inoculation with Bacterium lachrymans . Fig. 2.— 
Cucumber plant 18 days after spraying with Bad. lachrymans. Fig. 3.— 
Stem at X in figure 2 enlarged to show bacterial lesions... 476 
Plate XLVI. Green cucumber fruit photographed six days after inoculation 
with Bacterium lachrymans. Fig. 2.—Same fruit as shown in figure 1, but 
at the end of 12 days. Fig. 3.—Section of green cucumber fruit 10 days 
after inoculation with Bad. lachrymans . 476 
Plate XLVII. Fig. 1.—Cross section of a cucumber leaf, showing two stomatal 
infections. Fig. 2.—Cross section of cucumber leaf, showing a dense bac¬ 
terial infection due to Bacterium lachrymans. Fig. 3.— A, Agar-poured 
plate from bouillon dilution of Bad. lachrymans; B, agar-poured plate made 
from same quantity of same bouillon as A, but after freezing 15 minutes.. 476 
