...It consists of a central stem orstalk, probably hollow, or, at least, porous, possessing asemi-transparency, not found in the fibre of hair... 
Robert Jennings 「Sheep, Swine, and Poultry」
...Papillate -us: a surface with small elevations whichare porous at tip...
John. B. Smith 「Explanation of Terms Used in Entomology」
...A protective rind, a kind of solidified foam, envelops this core, exceptat the top, along the central line, where the porous rind is replaced bythin overlapping leaves...
J. H. Fabre Bernard Miall 「Social Life in the Insect World」
...Here there is a complete absence of the porous envelope, althoughthe nest is exposed to the weather, like the previous examples, affixedto some twig or fragment of rock...
J. H. Fabre Bernard Miall 「Social Life in the Insect World」
...The material through which the probe has to penetrate is not a porous substance; it is homogeneous and compact, like our hardened cement...
J. Henri Fabre Alexander Teixeira de Mattos 「The Mason-bees」
...The hide, which is thick and rather porous, is converted by the Indiansinto mocassins for the winter; they also make their shields of it...
George Vasey 「Delineations of the Ox Tribe」
...They are of a porous bony texture covered with short, coarse bristles...
Mayne Reid 「The Giraffe Hunters」
...It was porous, almost spongy, and seemed to be the lime dustfrom the roof and sides cemented by dripping water...
Gerard Fowke 「Archeological Investigations」
...Huge, straight, hollow stems they were, with mushroom caps, and, likeall fungi, fly-blown, for Tommy could see worms nearly a foot in lengthcrawling in and out of the porous stalks...
Victor Rousseau 「Astounding Stories of Super-Science January 1930」
...The country was so sandy and porous that no water remained onthe surface...
Ernest Giles 「Australia Twice Traversed, The Romance of Exploration」
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