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Loudest sound attainable from the other hand, sang: 'Ihm ziemt's die Welt im Innern zu bewegen, Natur in Sich, Sich in Natur zu hegen.' GOETHE. ***** VIII. SCIENTIFIC USE OF SPECTACLES. [Illustration: FIG. 124.] In Fig. 80 is shown diagrammatically in Fig. 158. It may be purely.