Injury, recovery, and death, in relation to conductivity and permeability . e additionof an equal volume of water {A M + 5 M). Thenext curve was produced by gromng plants in mixtures ofA M^-B M. The topmost curve was obtainedwith mixtures of A M-\-B M. The pairs of pure solutions were in each case equallytoxic, as is shown by the fact that the two ordinates atthe ends of each curve are equal in height. It will be observed that as the solutions become moredilute, the antagonism curve becomes flatter, and it isevident that at still greater dilutions it must ten
Injury, recovery, and death, in relation to conductivity and permeability . e additionof an equal volume of water {A M + 5 M). Thenext curve was produced by gromng plants in mixtures ofA M^-B M. The topmost curve was obtainedwith mixtures of A M-\-B M. The pairs of pure solutions were in each case equallytoxic, as is shown by the fact that the two ordinates atthe ends of each curve are equal in height. It will be observed that as the solutions become moredilute, the antagonism curve becomes flatter, and it isevident that at still greater dilutions it must tend tobecome a horizontal straight line. In order to give a complete description of the changesin the antagonism curve as dilution increases, it is neces-sary to construct a solid model. This might have as itsbase a triangular diagram as pre\aously described. Theapices of the triangle would in that case represent, A, B,and U^O, It is more suitable for our present purpose to employa square as the base and to represent the composition of 138 INJUEY, RECOVERY, AND DEATH (H20). B 0 50 100-%? the solutions according to the scheme shown in Fig. this figure the abscissas have the same significance asin Fig. 56, while the ordinates represent various dilutionsof the mixtures. Thus all points on the line CD representdistilled water, while a point such as E, halfway between A and C, represents a mixturecontaining equal quantities ofdistilled water and of A points on the line EF,therefore, represent the samemixtures as the correspondingpoints on the lowest line, ex-cept that the concentrationsare in all cases just one-halfas great as those representedon the base line. It is evidentthat the growth in any concen-tration may be expressed byerecting at the proper point aline perpendicular to the planeof the paper. In this way, wemay obtain a solid model whichgives a complete description of the changes in growthproduced by diluting the various mixtures. Such a modelis shown in Fig
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectphysiology, bookyear1
