546 Wisconsin Academy of Sciences, Arts, and Letters. 
In Figure 5, the percentages that strike the opening are taken 
as ordinates and the distances from the opening as abscissas. 
This curve makes it plain that on the whole, in spite of consid¬ 
erable fluctuations as the culture is moved back, the proportion 
of sporanges striking the opening sinks slowly from 98.4% at 
2 centimeters to 88.8% at 26 centimeters, then somewhat more 
rapidly to 84.1% at 40 centimeters, then very rapidly to 19.3% 
Fig. 7. 
at 5& centimeters, and then very gradually again to 2.4% at 
94 centimeters. 
In Figure 6, the percentages of sporanges striking area 3 at 
the different distances were taken as ordinates. The percent¬ 
ages on this area increase irregular, 14 from 2% or 3% at short 
range to 23.5% at 50 centimeters, and then decrease irregularly 
to 6.1% at 94 centimeters. 
In Figure 7, the percentage of sporanges striking area 4 
were taken as ordinates. This curve rises very slowly from 
0 at 2 centimeters to 5.4% at 40 centimeters, then abruptly to 
