An Introduction to the Study of the Optical Defects of the Eye and Their Treatment by the Scientific Use of Spectacles

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Fig 1
on p.257

FIG 2
on p.258

Fig 3
on p.259

FIG. 4.
on p.263

FIG. 5.
on p.265

FIG 6
on p.266

Fig. 7.
on p.266

FIG. 8.
on p.269