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hey consist of negatively charged particles or electrons, apparently the same in kind as those of the cathode rays, but having much higher velocities (about 35,000 to 180,000 miles per second).

bevel. Shak. A bevel angle, any angle other than one of 90º. -- Bevel wheel, a cogwheel whose working face is oblique to the axis. Knight.

different planes, and have their teeth cut at right angles to the surfaces of two cones whose apices coincide with the point where the axes of the wheels would meet.

A gold coin of Byzantium or Constantinople, varying in weight and value, usually (those current in England) between a sovereign and a half sovereign. There were also white or silver bezants. [Written also besant, byzant, etc.]

ting of a long cylinder of explosive material inclosed in a varnished wrapping of rope or hose. It burns from 2 to 4 feet a minute.

Twice crenated, as in the case of leaves whose crenatures are themselves crenate.

One whose occupation is to post handbills or posters in public places.

designate both genus and species. -- Binary scale (Arith.), a uniform scale of notation whose ratio is two. -- Binary star (Astron.), a double star whose members have a revolution round their common center of gravity. -- Binary theory (Chem.), the theory that all chemical compounds consist of two constituents of opp…

One who binds; as, a binder of sheaves; one whose trade is to bind; as, a binder of books.

A prism whose refracting angle is very nearly 180 degrees.

A species of capsicum (Capsicum baccatum), whose small, conical, coral-red fruit is among the most piquant of all red peppers.

, of the genus Neottia (N. nidus-avis.) Bird's-nest pudding, a pudding containing apples whose cores have been replaces by sugar. -- Yellow bird's nest, a plant, the Monotropa hypopitys.

A molding whose section is thought to resemble a beak.

One whose employment it is to catch birds; a fowler.

The day in which any person is born; day of origin or commencement. Those barbarous ages past, succeeded next The birthday of invention. Cowper.

e end of every century which is not divisible by 400, while it is retained at the end of those which are divisible by 400.

An American woody climber (Celastrus scandens), whose yellow capsules open late in autumn, and disclose the red aril which covers the seeds; -- also called Roxbury waxwork.

A negro; a person whose skin is of a black color, or shaded with black; esp. a member or descendant of certain African races.

uses scurrilous language, or treats others with foul abuse; a scoundrel; a rough. A man whose manners and sentiments are decidedly below those of his class deserves to be called a blackguard. Macaulay.

same direction with the same speed, and the work is shaped by a rapidly rotating cutter whose position is varied by the pattern acting as a cam upon a follower wheel traversing slowly along the pattern.