( 226 ) 
EXPLANATION OF PLATES XXXIX— XLIV. 
PLATE XXXIX. 
FIG. 
Frontispiece. Largest specimen of Fomes rimosus, Berk., seen by the author. 
It is from i/iaeotZcncZron croceum (Saffron wood), and measured 73 x 36 x 28 cms. 
and weighed 24^ lb. 
PLATE XL. 
1. Sporophore of the fungus on Ptaeroxylon utile (Snoczewood). 
2. Same as 1. Note the cracks where the sporophore originates. 
3. Diseased stem of Ptaeroxylon utile cut through and showing the destruction 
caused by the fungus. 
4. Stem cut through longitudinally. Note the brown fungous mass and also some 
empty pockets. 
PLATE XLL 
5. Felted mass of mycelium from hollow trunk of Ptaeroxylon utile. 
6. Brown fungous mass, practically in centre of stem, and white wood elements which 
have become dolignified and now consist of practically pure cellulose. 
7. ( X 300). — T.S. through diseased stem. Mycelium in large vessels. 
PLATE XLII. 
8. ( X 400). — Diseased stem in longitudinal section. Mycelium of the fungus in 
wood elements. 
9. ( X 400). — Radial longitudinal section. Mycelium in medullary rays. 
10. ( X 300). — Mass of mycelial threads of the fungus in the wood. 
PLATE XLIII. 
11. ( X 1000). — Mycelium boring its way through the cells of the medullary rays. 
12. ( X 1000). — Mycelium passing through pits of large vessels (a) ; boring its way 
through wood cells (b) and also some mycelial threads (c). The mycelium 
frequently runs in close contact to the walls of the cells of the host, and 
where a wall is to be bored through is usually swollen. 
PLATE XLIV. 
13. ( X 1000). — Mycelium boring through wood cells. 
14. ( X 1000). — Spores of the fungus. They are yellowish-brown, smooth, and vary 
from circular to oval. 
