172 



Bulletin 80 



TABLE XIV (c) 

 Corn roots grown iu well water with Cu(OH)2.CuC03 



Showing stimulation at .03 p.p.ju. 



TABLE XI A^ (d) 

 Squash roots grown in well water with Cu(0H)...CuC03 



Cu p.p.m. Elongation 48 hrs. Cu p.p.m Elongation 48 hrs. 



cheek 12.0 mm. .08 12.3 



.03 10.7 .1 13.2 



.05 10.0 



Showing no stimulation at these concentrations. 



TABLE XIV (e) 

 Bean roots grown in well water with Cu(0H)2.CuC0;; 



Showing stimulation at .05 p.p.m. 



TABLE XIV if) 



Squash roots grown in well water with Cu(0H).j.CuC03 



Cu p.p.m. Elongation 48 hrs. Cu p.p.m. Elongation 48 hrs. 



check 13.1 mm. .08 7.6 mm. 



.03 7.4 .1 9.7 



.05 8.8 .3 3.7 



Not showing stimulation consistently. 



TABLE XIV (g) 



Corn roots grown in well water with Cu(OH)2.CuC03 



Cu p.p.m. Elongation 48 hrs. Cu p.p.m. Elongation 48 hrs. 



check 9.8 mm. .1 13.5 mm, 



.01 13.8 .3 10. 



.05 17.5 .5 3.8 



Showing strong stimulation .01 to .1 mm. 



