Page:Eleanor Gamble - The Applicability of Weber's Law to Smell.pdf/57

 $Δr/r$  r=a  2a  2a+. (See Table IV.)

Of these curves, the heavy lines give the values for the smaller, and the broken lines for the larger standards. The ordinates give the number of cases, and the abscissæ approximate values.

orders, we preface the Tables with the following list of sub- stances as used in order by each subject :

Be. Black rubber, tolu, cocoa-butter, asafœtida, Russian leather, gray rubber, conmarine, heliotropine, valerianic acid, citral. Bi. Cocoa-butter, coumarine, vanilline. C. Gum benzoin, oil of mace, cedar, coumarine. D. Gray rubber, gum benzoin, oil of mace, coumarine, oil of camphor. K. Tolu, rosewood, asafœtida, Russian leather, gum ammoniac and gutta-percha from Utrecht, oil of mace, coumarine, musk, ethyl butyrate. M. Cocoa-butter, coumarine. N. Black rubber, tallow, musk-root, rose-wood, oil of mace, heliotropine, oil of camphor, vanilline.