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nt disease of sheep. Blast furnace, a furnace, usually a shaft furnace for smelting ores, into which air is forced by pressure. -- Blast hole, a hole in the bottom of a pump stock through which water enters. -- Blast nozzle, a fixed or variable orifice in the delivery end of a blast pipe; -- called also blast orifice…

That portion of the spermatospore which is not converted into spermatoblasts, but carries them.

The pore or opening leading into the cavity of invagination, or archenteron.

morial bearings); to emblazon. The coat of , arms, which I am not herald enough to blazon into English. Addison.

To mingle; to mix; to unite intimately; to pass or shade insensibly into each other, as colors. There is a tone of solemn and sacred feeling that blends with our conviviality. Irving.

method of laying on different tints so that they may mingle together while wet, and shade into each other insensibly. Weale.

A large or long building divided into separate houses or shops, or a number of houses or shops built in contact with each other so as to form one building; a row of houses or shops.

A system by which the track is divided into short sections, as of three or four miles, and trains are so run by the guidance of electric, or combined electric and pneumatic, signals that no train enters a section or block until the preceding train has left it, as in absolute blocking, or that a train may be allowed to…

A piece of hard wood loaded at one end with lead, and used to strike the fleam into the vein. Youatt.

beauty, freshness, and vigor; an opening to higher perfection, analogous to that of buds into blossoms; as, the bloom of youth. Every successive mother has transmitted a fainter bloom, a more delicate and briefer beauty. Hawthorne.

To sound on being blown into, as a trumpet. There let the pealing organ blow. Milton.

A tube for directing a jet of air into a fire or into the flame of a lamp or candle, so as to concentrate the heat on some object.

One of the seven colors into which the rays of light divide themselves, when refracted through a glass prism; the color of the clear sky, or a color resembling that, whether lighter or darker; a pigment having such color. Sometimes, poetically, the sky.

ely of a subject which it is forbidden to investigate. The Bluebeard chamber of his mind, into which no eye but his own must look. Carlyle.

. his abominable blasphemy. Sir T. More. As if therewith he meant to bluster all princes into a perfect obedience to his commands. Fuller.

the general; . . . in the body was the king and the prince. Clarendon. Rivers that run up into the body of Italy. Addison.

To sink, as into a bog; to submerge in a bog; to cause to sink and stick, as in mud and mire. At another time, he was bogged up to the middle in the slough of Lochend. Sir W. Scott.

action of heat. -- To boil over, to run over the top of a vessel, as liquid when thrown into violent agitation by heat or other cause of effervescence; to be excited with ardor or passion so as to lose self-control.

ith heat, ardor, or passion. Boiling point, the temperature at which a fluid is converted into vapor, with the phenomena of ebullition. This is different for different liquids, and for the same liquid under different pressures. For water, at the level of the sea, barometer 30 in., it is 212 º Fahrenheit; for alcohol, 1…

phosphorescent when calcined. -- Bologna vial, a vial of unannealed glass which will fly into pieces when its surface is scratched by a hard body, as by dropping into it a fragment of flint; whereas a bullet may be dropped into it without injury.