18 BULLETIN 799, TJ. S. DEPARTMENT OF AGRICULTURE. 
In classifying the sporophores according to the positions occu- 
pied on the trunk of the host it was found that the largest percentage 
of them (28 per cent) developed on the west side of the tree, with 
the smallest percentage (3.3) on the southeast side. Most of the 
largest ones were found near the upper end of the group on each tree. 
On the slope sites, out of a total of 662 trees 22 per cent were 
found bearing sporophores. In this connection it must be remem- 
bered that a much higher percentage of the trees on the slope sites 
was in the 120 to 160 age class, which bore the maximum number of 
sporophores. The sporophore-bearing trees carried a total of 531 
sporophores both dead and alive, of which 195, or over 93 per cent 
(93.2), were alive and 36, or nearly 7 per cent (6.8), were dead. 
These figures give an average for the total stand of 31 live sporo- 
phores to every 10 trees, 2.5 dead sporophores to every 10 trees, and 
36 live and dead sporophores to every 10 trees. Considering all of 
the trees of the six age classes given and not limiting the figures to 
sporophore-bearing trees alone, an average of eight siDorophores both 
dead and alive was found for every 10 trees. Of the largest sporo- 
phores, which varied in size from 1 by 1 by 1 to 6 by 10 by 10 inches, 
91 per cent were found alive and 6 per cent dead. The average of the 
ages of the largest sporophores is recorded as approximately 12 
years and the average height on the trunk was 5.5 feet. Most of the 
sporophores on this site were found grouped on the north side of the 
trunks, 21 per cent being on the north side and the smallest, or 5 per 
cent, on the southeast side. Most of the largest ones were found at 
about the middle of each group of sporophores. 
In comparing the two types of site some interesting figures are 
disclosed. The bottom sites, to begin with, have a larger percentage 
of sporophore-bearing trees and a slightly larger average number 
both of living and of dead sporophores per sporophore-bearing tree. 
In the 81 to 100 age class the bottom sites have 22 per cent of the 
total trees bearing sporophores, while for the slope site there are 
none. In the 101 to 120 age class on the bottom sites 41 per cent of 
the total trees were found bearing sporophores, with only 7 per cent 
in the slope sites. In the 121 to 160 age class are found the maximum 
figures. In this age class for the bottom sites 43 per cent of the total 
trees bore sporophores and for the slope sites 45 per cent, The aver- 
age of the ages of the largest sporophores is also greater on these sites. 
On the other hand, the slope sites have a greater percentage of the 
larger sporophores alive than the bottom sites. It is very interesting 
to find that the percentage of live and dead sporophores to the total 
number of sporophores is practically the same for both types of 
site. This would seem to indicate that site does not appreciably 
affect the vitality of the sporophore, although it apparently affects 
the number of sporophores produced. 
