Nov., 1922] LEVINE LAMELLAE IN AGARICUS CAMPESTRIS 
disintegrate and the fundamental tissue to collapse, as shown in figure 54. Continuity of 
the hyphae between the trama and the fundamental tissue may still be seen in both figures. 
Ocular 4, objective 3, bellows 20 cm. 
Figs. 56, 57. Sections of a young dead carpophore 96 hours old after it had failed to 
show signs of further development. Fig. 56. Longitudinal tangential section near the 
margin of the pilear region, showing the trama as more heavily stained columns of tissue 
continuous with the less deeply stained hyphae of the fundamental tissue below. Fig. 57. 
Longitudinal tangential section near the stipe, showing the tearing away of the trama of 
the young gills from the fundamental tissue, the annulus, resulting in the furrows on its 
surface at A, Ocular 4, objective 3, bellows 20 cm. 
Plate XXX 
Fig. 58. A longitudinal median section of the same carpophore shown in figures 56 
and 57, showing the young gills torn away from the fundamental tissue. Ocular 4, objec- 
tive 3, bellows 20 cm. 
Figs. 59-61. Longitudinal median sections of young carpophores which had turned 
brown after being on the bed 48 to 72 hours and having failed to show signs of growth, 
showing the trama of the young gills continuous with the fundamental tissue; the involute 
margin is not strongly developed. Ocular 4 (figure 61, ocular i), objective 3, bellows 
20 cm. 
Plate XXXI 
Fig. 62. Longitudinal median section of abnormal button showing a densely staining, 
bowl-shaped central structure comparable to Fayod's couche pileogene. Ocular 4, Spencer 
objective 32 mm., bellows 20 cm. 
Fig. 63. Enlargement of part of figure 62, showing the structure of the couche pileo- 
gene. Ocular i, objective 3, bellows 20 cm. 
Fig. 64. Longitudinal median section of abnormal button slightly older, showing 
poroid gills to the right and left of the couche pileogene. Ocular 4, Spencer objective 32 
mm., bellows 20 cm. 
Fig. 65. Enlargement of figure 64, showing more clearly the nature of the poroid 
gills. Ocular 3, objective 3, bellows 20 cm. 
Plate XXXII 
Figures 66 to 84 inclusive represent Coprinus ephemerus. 
Fig. 66. A pure culture grown in Petri dishes on dung agar, showing sclerotia and 
radiating rhizomorphs on which minute carpophores are beginning to appear. 
Fig. 67. A later stage, with much branched and anastomosing mycelium covered 
with great numbers of young carpophores. 
Fig. 68. A pure culture, showing an abundance of young carpophores near the margin 
of the dish; in the center, a mass of sclerotia surrounded by a weft of aerial hyphae. 
Figs. 69, 70. Microphotographs of a young carpophore. Fig. 69. Longitudinal 
tangential section, showing four pockets of palisade cells with three groups of intervening 
tramal tissue continuous between the pilear and stipe regions shown at A. Fig. 70. Me- 
dian longitudinal section of the same carpophore; the cluster of deeply staining cells to 
the left represents a radial view through a pocket of palisade cells. The less deeply stained 
cluster of cells is a section through the trama. Ocular 3, objective 6, bellows 40 cm. 
Plate XXXIII 
Figs. 71-73. A series of sections of a young carpophore grown on agar. Fig. 71. 
Longitudinal median section of a young carpophore through two clusters of oppositely 
