. Physical researches on sensation [by] Frank Allen [and others]. S .70 js Fig. 30 ■05 Or /ooIco/eo loo foo /CO 90 loo 100 loolaolooloo loo 100 110 loo -3M^. Oli-S ■OtfO- 035 •030 ■ OXS- ■OKO OOlS or Darkness c o tar UarKxeSS o|Norv* r

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectphysiol, bookyear1902