Tgo9] LIPMAN-—-EFFECTS OF SALTS ON BACILLUS 121 
SERIES VIII. SODIUM CHLORID vs. POTASSIUM CHLORID 
This series was carried out to determine the antagonistic action 
between KCI and NaCl and was arranged in the same manner as the 
foregoing series. The ammonia determinations gave the following 
results: 
TABLE IX 
ALL QUANTITIES GIVEN REFER TO CUBIC CENTIMETERS OF 0.35 # SOLUTIONS 
Culture solution Ret ed ops tepsiesn 5 Miiigrapes Ce 
FOG Wet ee ae K 10.99 
es nc 4 are eee J be 
te eat CRAs AN eters I 10.50 
me Kal ¢ Pe ineaes H Io 08 
is Pes eee G 9.66 
re eat et tone F a 
Boa Siar Pe Paiie pours E 17-57 
Ras eel eee D Oe 
a alt pees Cc 13-44 
es nat PRI pes B Trial 
TOG“ RA fe ea A 10.57 
That the like valences of the two salts employed do not prevent 
antagonistic action in the case of B. subtilis (as may have been sur- 
mised from results in the last series) can be seen from the curve in 
fig. 5. Here again, there is a marked resemblance between the effect 
of this combination of metallic salts on B. subtilis and on animals and 
higher plants. Litutr, for example, showed (3) that the ciliary 
activity of the larvae of Arenicola, which was inhibited in solutions 
of either KCI or NaCl alone, went on normally when solutions of the 
two at the same concentrations were e mixed in the proportion of 20 
parts NaCl to 8 parts KCl. ‘ 
Los (9) and Ostwatp (22) also found, in working on a marine 
