Adjective : ferruginous clays. From Dictionary.com.
Much more recently the idea of ferruginous particles has been revived, their presence being ascribed not to volcanoes, but to the meteorites constantly being dissipated in the upper atmosphere. From Wordnik.com. [A History of Science: in Five Volumes. Volume III: Modern development of the physical sciences] Reference
The mandibles ferruginous, with their apex piceous. From Wordnik.com. [Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology] Reference
The flagellum beneath fulvous; the mandibles ferruginous. From Wordnik.com. [Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology] Reference
Black and very smooth and shining; the legs dark ferruginous. From Wordnik.com. [Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology] Reference
Various specimens from Greece and Celebes have the thorax more or less ferruginous. From Wordnik.com. [Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology] Reference
The scape, labrum, mandibles and palpi ferruginous; the clypeus widely emarginate anteriorly. From Wordnik.com. [Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology] Reference
The tarsi obscurely rufo-piceous, the claws ferruginous; wings dark fuscous, their base hyaline. From Wordnik.com. [Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology] Reference
Abdomen: the apical margins of the segments obscurely and narrowly rufo-piceous, the apex ferruginous. From Wordnik.com. [Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology] Reference
Black, very smooth and shining; the legs ferruginous, with the coxæ, articulations, and the tarsi black. From Wordnik.com. [Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology] Reference
Black; the antennæ and the head above their insertion ferruginous, the scape black, the head coarsely punctured. From Wordnik.com. [Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology] Reference
At a depth of 490 feet, sandstone with iron pyrites was pierced; this would probably be the ferruginous Northampton sand of the Oolite. From Wordnik.com. [Records of Woodhall Spa and Neighbourhood Historical, Anecdotal, Physiographical, and Archaeological, with Other Matter] Reference
Black; the head and thorax finely rugose; the antennæ elongate, longer than the insect; the apical half of the flagellum pale ferruginous. From Wordnik.com. [Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology] Reference
Abdomen: the first, second, and third segments with a fascia of silvery-white pile at their basal margins; the apex of the abdomen ferruginous. From Wordnik.com. [Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology] Reference
The flagellum fulvous beneath, the mandibles ferruginous at their apex; the tarsi ferruginous, wings hyaline, nervures fuscous, stigma testaceous. From Wordnik.com. [Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology] Reference
Mouth and antennæ testaceous; abdomen, hind femora at the tips, and fore tibiæ piceous, anterior tarsi ferruginous; wings dark grey, veins black. From Wordnik.com. [Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology] Reference
Pale rufo-testaceous; the head heart-shaped; the eyes black, the flagellum fusco-ferruginous with the basal joints pale; the mandibles ferruginous. From Wordnik.com. [Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology] Reference
Shining black; head of moderate size; the clypeus and mandibles obscure ferruginous; the flagellum fusco-ferruginous, with the tip pale testaceous. From Wordnik.com. [Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology] Reference
Black; the scape, the base of the flagellum beneath, the anterior margin of the clypeus and the mandibles ferruginous; the latter black at their apex. From Wordnik.com. [Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology] Reference
Thorax: a black stripe on each side of the mesothorax over the tegulæ; the wings subhyaline, the nervures ferruginous, the superior pair fuscous at their apex. From Wordnik.com. [Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology] Reference
Black; the head smooth and shining; the clypeus, the cheeks, and face anteriorly covered with silvery pile; the scape in front, the mandibles, and palpi ferruginous. From Wordnik.com. [Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology] Reference
As, in my experience at least, it leaves nothing to wish for, I would consider it superfluous to discuss in this connection any of the other ferruginous preparations. From Wordnik.com. [The Electric Bath] Reference
Thorax: the tegulæ pale rufo-testaceous, wings hyaline, the nervures ferruginous; the metathorax coarsely rugose; the articulations of the legs and the tarsi ferruginous. From Wordnik.com. [Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology] Reference
Most of the fashionable ferruginous hair washes also contain a few grains of acetate of copper or distilled verdigris, the objections to which have been already pointed out. From Wordnik.com. [The Ladies Book of Useful Information Compiled from many sources] Reference
Abdomen: the four basal segments with transverse impressed lines in the middle; beneath, clothed with bright ferruginous pubescence; the abdomen has an obscure æneous tinge above. From Wordnik.com. [Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology] Reference
The waters are alkaline, ferruginous, and stimulant, temperature between 75° F. and 110° F., and are recommended for renal and hepatic diseases, amenorrhœa, leucorrhœa, and gout. From Wordnik.com. [The South of France—East Half] Reference
Black; the apical joints of the flagellum, the anterior legs, the anterior and intermediate tibiæ, and the apical joints of the tarsi pale ferruginous; the extreme base of the anterior tarsi black. From Wordnik.com. [Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology] Reference
Thorax rounded above, the sides not margined; two spines on the thorax anteriorly, two on the metathorax, and two on the scale of the petiole; the legs elongate, with the anterior tibiæ ferruginous. From Wordnik.com. [Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology] Reference
The metathorax transversely and rather finely rugose, the truncation more strongly striated; the scutellum shining; the wings subhyaline, the nervures ferruginous; the tibiæ with scattered spines, the tarsi spinose. From Wordnik.com. [Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology] Reference
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