XII 
Journal of Agricultural Research 
Vol. V 
Pathogenicity and Identity of Sclerotinia ubertiana and Sclero- 
TINIA SMILACINA ON GlNSENG 
Plate XX VI1 1 . Sclerotinia Ubertiana: Fig. i.—Root inoculated with Sclerotinia 
Ubertiana from lettuce. Fig. 2.—Three roots (on left) inoculated with Sclero¬ 
tinia sp. from ginseng. Healthy check root (on right). Fig. 3.—Apothecia 
from sclerotia from celery strain. Fig. 4.—Apothecia from sclerotia from 
ginseng strain. 
Plate XXIX. Sclerotinia smilacina: Fig. 1.—Ginseng roots showing the char¬ 
acteristic black color from artificial inoculation. Fig. 2.—Rhizomes of 
Smilacina racemosa inoculated with a species of Sclerotinia isolated from 
ginseng. 
Page 
298 
298 
An Improved Respiration Calorimeter for Use in Experiments with 
Man 
Plate XXX. General view of the respiration calorimeter. 348 
Plate XXXI. Fig. 1.—Structural iron framework for respiration chamber. 
Fig. 2.—Copper-walled chamber attached to inside of iron framework.... 348 
Plate XXXII. Fig. 1.—Zinc wall attached to outside of iron framework, with 
all but the last sections shown in place. Fig. 2.—Devices for circulating 
and purifying air. 348 
Plate XXXIII. Fig. 1.—Special container for sulphuric acid, to remove 
water vapor from air passing through it. Fig. 2.—A small absorber train 
for removing water vapor and carbon dioxid from sample of residual air... 348 
Plate XXXIV. Fig. 1.—Balance for weighing oxygen cylinder and end 
view of absorber table. Fig. 2.—Method of attaching heating and cool¬ 
ing systems to zinc wall. 348 
Plate XXXV. Fig. 1.—Interior of respiration chamber with subject as seen 
through the window. Fig. 2.—Apparatus for regulating and measuring 
the temperature of water. 348 
Plate XXXVI. Fig. 1.—Observer’s table. Fig. 2.—Devices for regulating 
temperature of water for heat absorber. 348 
Varietal Resistance of Plums to Brown-Rot 
Plate XXXVII. Fig. 1.—Lenticel in ripe fruit of Sapa plum. Fig. 2.—Len- 
ticel in ripe fruit of Gold plum partially filled with parenchymatous cells. 
Fig. 3.—Lenticel in green Burbank plum. Fig. 4.—Lenticel in green fruit 
of B X W21 completely filled with parenchymatous tissue. Fig. 5.—Ripe 
healthy tissue of Sapa plum, showing middle lamella completely dissolved 
out, owing to ripeniiig process. Fig. 6 — Ripe healthy tissue of Reagan 
plum two weeks after picking. 396 
Plate XXXVIII. Fig. 1.—Infection through a lenticel of Burbank plum the 
cavity of which is lined with corky-walled cells. Fig. 2.—Left side of 
figure 1 in detail, showing hyphae entering the fruit tissue after the epider¬ 
mis has been raised by the growth of the hyphae in the stomatal cavity. 
Fig. 3.—Infection through a lenticel in B X W4. Fig. 4.—Infection 
through a stoma in a young green fruit of Prunus americana seedling No. 1, 
in which no corky walls have yet been formed. Fig. 5.—Infection through 
a lenticel of the same type as is shown in figures 1 and 3. Fig. 6.-—Half- 
grown fruits of B X W15 completely rotted through wound inoculations. 
Fig. 7.—Half-grown fruits of B X W21 completely rotted through wound 
inoculations. Fig. 8.—Half-grown fruits of A X W15 completely rotted 
through wound inoculations. Fig. 9.—Half-grown fruits of Etopa plum 
completely rotted through wound inoculations, and completely covered 
with large spore tufts. 396 
