96 
BOTANICAL GAZETTE 
[auGustT 
the concentration at which the copper ions in the solution are 
insufficient to kill the beans. 
13. COPPER SULFATE (CuSOQO,). 
(Begun February 26, 4 P.M.; closed February 27, [2 M.) 
Concentration 
. gm. mol, per liter Length. Remarks 
a5¢00 16.0%" discolored, dead 
go ae 16.5" “ és 
51200 2t.0 alive 
a #20" alive (?), tip slightly discolored 
2.0" alive 
204800 io “ «“ 
——————_ 
14. COPPER CHLORIDE (CuCl,). 
(Begun February 26, 4 p.M.; closed February 27, 1 P.M.) 
Concentration 
gm. mol, per liter 
15. COPPER ACETATE. ~Cu (C,H,0,4)9- 
(Begun February 26, 5 p.M.; closed February 27, 12 M.) 
Length 
Remarks 
dead 
ia 
alive (2), tip slightly darkened 
alive 
Concentration 
gm, mol, per liter Length Remarks 
Seay eR eS MEER oie 
Bseo0 16.0™™ dead 
Oe ee 16.0 “ “ 
sitoo 20° alive 
8 e 6 22.0 * oe 
rov200 21.0 ** +“ 
par 31.0 “ “ 
s0eso0- 28.0 A 
Ae 26.0 “* . 
solutions of the compounds used in the above tables 1 to 6, as well as of most 
inorganic substances menti 
buch, 2: 722-772, 
oned in this paper, are also to be found in Ostwald 
