. comptesrendusheb1381904acad. es naturelles. Lc- Sclér chillres indiquent les pressi. Surdi-mutilé. 'JUS sous lesquelles les diirérentes vinelles sont entendue l'intensité du son est proportionnelle à hi pression de l'ai r qui le Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original nce Periodicals; dicals.

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