... Shell generally with an elongated spire, the aperture below narrowed; upper syphon or channel small or wanting...
William Swainson 「Zoological Illustrations, Volume I」
...Ifound by the syphon barometer that our height above the sea was here1579 feet...
Thomas Mitchell 「Journal of an Expedition into the Interior of Tropical Australia」
...I commenced a series ofobservations with a syphon barometer (made by Bunten of Paris)...
Thomas Mitchell 「Journal of an Expedition into the Interior of Tropical Australia」
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