D FROM SPECULUM TO 52), and meet, consequently, at ment of thickness of the glass PRODUCE APPEARANCE INDICATED IN FIG. 59. FIG. 6l. — APPEARANCE OF HYPERBOLIC one and the same point. is concerned. Consequently, with SPECULUM IN SOLID, REPRESENTING RELA. Above zero, as it were, is the the exception… … VOL. V.— C C
Industrial arts · Handicraft
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