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rt. The American species are C. Americana, which produces the common hazelnut, and C. rostrata. See Filbert. Gray.

A ridge formed by tilted strata; hence, any ridge with a sharp summit, and steeply sloping sides.

bra de capello, Asp, Haje, etc. -- Hooded warbler, a small American warbler (Sylvania mitrata).

The epoch or time during which a deposit was made. The strata all over the earth, which were formed at the same time, are said to belong to the same geological horizon. Le Conte.

A grand division of the Vertebrata, including the Amphibia and Fishes.

A rich, powerful, perfume, obtained from the volatile oil of the flowers of Canada odorata, an East Indian tree. [Also written ylang-ylang.]

d cases of caddice worms, or larvæ of caddice flies (Phryganea). It is found in Miocene strata of Auvergne, France, and some other localities.

To take by wiles, stratagem, or deceit; to involve in difficulties or perplexities; to seduce by artifice; to inveigle; to allure; to entangle. The insnaring charms Of love's soft queen. Glover.

Stratification among or between other layers or strata; also, that which is interstratified.

To put or insert between other strata.

plicated plot or scheme intended to effect some purpose by secret artifice; conspiracy; stratagem. Busy meddlers with intrigues of state. Pomfret.

The folding back of strata upon themselves, as by upheaval, in such a manner that the order of succession appears to be reversed.

Destitute of a backbone; having no vertebræ; of or pertaining to the Invertebrata. -- n.

Situated apparently in reverse order, as strata when folded back upon themselves by upheaval. Inverted arch (Arch.), an arch placed with crown downward; -- much used in foundations.

A term applied to many American Mesozoic strata, in which the characteristics of the Jurassic and Triassic periods appear to be blended. -- Ju`ra-tri*as"sic, a.

Pertaining to, or derived from, Krameria (rhatany); as, krameric acid, usually called ratanhia-tannic acid.

intruded between sedimentary beds and resulting in a mammiform bulging of the overlying strata. -- Lac`co*lit"ic, a.

An extensive series of strata, principally developed in the Rocky Mountain region, as in the Laramie Mountains, and formerly supposed to be of the Tertiary age, but now generally regarded as Cretaceous, or of intermediate and transitional character. It contains beds of lignite, often valuable for coal, and is hence als…

The lowest class of Vertebrata, including only the Amphioxus. The heart is represented only by a simple pulsating vessel. The blood is colorless; the brain, renal organs, and limbs are wanting, and the backbone is represented only by a simple, unsegmented notochord. See Amphioxus. [Written also Leptocardii.]…

enera. See Brachiopoda, and Illustration in Appendix. Lingula flags (Geol.), a group of strata in the lower Silurian or Cambrian system of Wales, in which some of the layers contain vast numbers of a species of Lingula.