Injury, recovery, and death, in relation to conductivity and permeability . te contact Aviththe solution does not furnish atrustworthy criterion of antagon-ism. Thus the leaves of wheat Fiq. 52.—Types of antagonism.,., .. . •ill! curves: the ordinates express (which are not m contact with the growth; the abscissae express the composition of the mixtures as in solution) often grow well at the Fig. 49. start in solutions of toxic substances because the latter are held back by the roots. The method of mixing equally toxic solutions has alsoa great advantage when three solutions are employed. Asan
Injury, recovery, and death, in relation to conductivity and permeability . te contact Aviththe solution does not furnish atrustworthy criterion of antagon-ism. Thus the leaves of wheat Fiq. 52.—Types of antagonism.,., .. . •ill! curves: the ordinates express (which are not m contact with the growth; the abscissae express the composition of the mixtures as in solution) often grow well at the Fig. 49. start in solutions of toxic substances because the latter are held back by the roots. The method of mixing equally toxic solutions has alsoa great advantage when three solutions are employed. Asan illustration of this we may take mixtures of NaCl -j-KCl + CaClo. In the case of wheat it was found that theroots grew equally well in solutions of M, , and CaCla M, Mixtures of these solutions wereprepared and the growth of the roots in these mixtureswas measured after a period of 30 days. In order to showthe results graphically, the composition of the solutionsmay be conveniently expressed by means of a triangulardiagram as drawn in Fig. 132 INJUEY, RECOVERY, AND DEATH The diagram consists of an equilateral triangle, theapices of which represent equally toxic pure the point A represents pure CaCU ( M), Brepresents pure KCl ( ilf), and C represents pureNaCl ( M). All points on the sides of the trianglerepresent mixtures of two solutions only, the compositiondepending on the position of the point. Thus the point 0 25 51) 75 100 NACL KCL 100
Size: 1575px × 1587px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjectphysiology, bookyear1
