. comptesrendusheb1161151893acad. es naturelles. ( 5o4 ) maintenu dans la position voulue soit à l'aide de deux aiguilles a, a péné- trant dans de très petits trous en haut ou en bas du petit barreau, soit à Oscillographe à barreau mobile (Croquis schématique en demi-grandeur). Kifr. 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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Keywords: ., book, bookcentury1800, bookdecade1890, bookpublisher, bookyear1893