1914] JOLIVETTE—PILOBOLUS Tis 
The above percentages striking the area of the r-cm. opening 
before each of the two lamps compared are given, together with 
those computed for the remaining experiments, in table IX. The 
complete data from which the percentages were figured are found 
in table VIII. 
TABLE IX 
PERCENTAGES OF THE TOTAL NUMBER OF SPORANGIA DISCHARGED TOWARD THE 
TANTALUM AND CARBON FILAMENT LAMPS WHICH STRUCK THE I-CM. 
VERTICAL STRIPS COVERING THE OPENING IN EACH CASE IN 
EXPERIMENTS 1-23 IN TABLE VIII 
Number Percentage Percentage Number Percentage Percentage 
of before before of ore ore 
experiment tantalum lamp | carbon lamp experiment tantalum lamp | carbon lamp 
1 aera Py eS I 63.8 66.6 PRU ees 49.3 34.8 
eras eae 48.2 48 se netrnt sc 68.3 52.7 
i EEE ey 50.7 5° «dee 60.2 69.2 
EE 58 67.7 16. 248 68.5 66.7 
eo 68.1 52 Lee eee 78.5 63.1 
eee 55.5 58 ae eke 55.3 67 
1 Pees 71.2 63.2 G6 oes 63.6 61.8 
Boras 63.8 47 a ees na 32.6 43.1 
ee eee 71.2 67.6 Bose ea 63.3 78.5 
chin ree 57 54.2 7 ene Se 92.7 52.3 
Le eae are 52:4 47.6 Canes 45.6 50.4 
sie FS ae 41.7 a4.2 
Average. . 58.6 55-9 
ee 
In this set of experiments the accuracy of discharge varies con- 
siderably. In some cases the discharge toward the tantalum is 
more accurate; in others that toward the carbon lamp is more so. 
On the whole, however, the discharge is a little more accurate 
toward the tantalum, but the difference is so small that it is prac- 
tically negligible. 
From the percentages in table IX, it stands out clearly that 
wherever there was a small percentage which struck the opening 
before one lamp, there was usually a comparatively small percen- 
tage on the corresponding area before the second light. In the 
first experiment, 63.8 and 66.6 were the percentages striking the 
two openings. In the second experiment, 48.2 and 48 per cent 
struck the openings. In some cases there is less uniformity. The 
eighth experiment shows 63.8 per cent on one opening and 47 
Per cent on the other. But on the whole, a small percentage on 
