1gog] LIPMAN—EFFECTS OF SALTS ON BACILLUS 117 
found to be none the less definite by Lors (6) in experiments which 
showed that sea-urchin blastulae and gastrulae would swim about 
TABLE VII 
ALL QUANTITIES GIVEN REFER TO CUBIC CENTIMETERS OF 0.35 ™ SOLUTIONS 
Culture solution Corresponding | Milligrams of N 
points on curve formed as NH; 
100 MgCl ea isos K 3.08 
too MgCl, 
e Cac. Gk = J 2.59 
too MgCl, 
baa See I 1.68 
too MgCl, 
25 CaCl t Srna H .98 
too MgCl, 
50 CaCl, ; ee oe G “21 
too MgCl 
sie CaCl, erate ae F .O7 
50 MgCl 
a3 CaCl, Rg ieee E 00 
25 MgCl 
100 CaCl, o -C6R oa) .€, O-OH6 D oo 
to MgCl 
— ot pa se Cc 00 
5 MgCl 
100 CaCl, o's Sele ee ee B -0O0 
1600 Cah 3 ee ps -49 
in a mixture of the salts above mentioned for forty-eight hours, while 
each salt by itself would immediately prove poisonous at the concen- 
IG. 4.—Non-antagonism curves, CaCl, vs. MgCl. The ordinates at K repre- 
sent the ammonia nitrogen in milligrams formed in a pure MgCl, solution. The 
ordinate at A represents the amount of ammonia nitrogen formed in a pure CaCl. 
solution, and the ordinates at the intermediate points represent the amounts formed 
in various combinations of the two salts as indicated by the corresponding letters in 
tables VII (unbroken line) and VIII (dotted line). 
