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y, geology, mineralogy, paleontology, chemistry, and physics. In recent usage the term is often restricted to the sciences of botany and zoölogy collectively, and sometimes to the science of zoology alone. -- Natural law, that instinctive sense of justice and of right and wrong, which is native in mankind, as distingu…

total or in detail; the agencies which carry on the processes of creation or of being; -- often conceived of as a single and separate entity, embodying the total of all finite agencies and forces as disconnected from a creating or ordering intelligence. I oft admire How Nature, wise and frugal, could commit Such dispro…

see Bean. -- Navy yard, a place set apart as a shore station for the use of the navy. It often contains all the mechanical and other appliences for building and equipping war vessels and training their crews.

the solar system among the stars. True nebulæ are gaseous; but very distant star clusters often appear like them in the telescope.

That which is necessary; a necessary; a requisite; something indispensable; -- often in the plural. These should be hours for necessities, Not for delights. Shak. What was once to me Mere matter of the fancy, now has grown The vast necessity of heart and life. Tennyson.

A band which goes around the neck; often, the part at the top of a garment.

Of necessity; necessarily; indispensably; -- often with must, and equivalent to of need. A man must needs love mauger his head. Chaucer. And he must needs go through Samaria. John iv. 4. He would needs know the cause of his reulse. Sir J. Davies.

An order of helminths usually having a long, slender, smooth, often bright-colored body, covered with minute vibrating cilia; -- called also Nemertea, Nemertida, and Rhynchocæla.

nto a kind of stout tendril terminating in a pitcherlike appendage, whence the plants are often called pitcher plants and monkey-cups. There are about thirty species, of which the best known is Nepenthes distillatoria. See Pitcher plant.

nephews [Rev. Ver. grandchildren,]. 1 Tim. v. 4. If naturalists say true that nephews are often liker to their grandfathers than to their fathers. Jer. Taylor.

species of shells resembling Nerita in form. They mostly inhabit brackish water, and are often delicately tinted.

dinating apparatus which endows animals with sensation and volition. In vertebrates it is often divided into three systems: the central, brain and spinal cord; the peripheral, cranial and spinal nerves; and the sympathetic. See Brain, Nerve, Spinal cord, under Spinal, and Sympathetic system, under Sympathetic, and Illu…

the first day of a calendar year; the first day of January. Often colloquially abbreviated to New year's or new year.

Nothing; of no account; worthless; -- a term often used for canceling, in accounts or bookkeeping. A. J. Ellis.

as well as for their phosphorescence. The brilliant diffuse phosphorescence of the sea is often due to myriads of Noctilucæ.

Something of unequaled excellence; a peerless thing or person; a nonesuch; -- often used as a name.

Marked with spots or lines, which are often colored. Henslow.

An announcement, often accompanied by comments or remarks; as, book notices; theatrical notices.

Obs.] Chaucer. -- Now and then, at one time and another; indefinitely; occasionally; not often; at intervals. "A mead here, there a heath, and now and then a wood." Drayton. -- Now now, at this very instant; precisely now. [Obs.] "Why, even now now, at holding up of this finger, and before the turning down of this."…

To walk quickly with the head bent forward; -- often with along. [Prov. Eng.]