BAL SUPPLEMENT. BAT 



Riiberval the mathematician to illustrate the the Barometer, but more suitable for such 

 mechanical theory of couples It involves a barometers as are qualified to show varia- 

 curious paradox, which was first satisfactorily tions merely without any graduated scale, 

 explained by Poiusot in his"E16ments de BAROSKLENITE, heavy spar or sulphate ot 

 fltatique." baryta. This is a misnomer, founded on 



BALAUSTRA, a leathery-rinded fruit, wit'i resemblance of crystals to those of seleuite. 

 Buperior calyx, and irregular cells containing BARKIS, the name given to a large kind 

 numerous drupaceous seeds. The pomegranate of baboon found on the coast of Guinea. 

 13 an example. BARYTO-C*LESTIN, a native compound of 



BALNEUM, a bath, or bathing chamber, at sulphate of baryta and sulphate of strontia 

 one time distinguished from the public bath, found crystallised in Canadaaud Switzerland, 

 which was called Balnece though the dis- BARYTO-CALCITE, a native compound of 

 tinction disappeared latterly, when hot carbonate of lime and carbonate of baryta, 

 water came to be introduced, and Balnece found in the mountain limestone of Cutn- 

 aud Thermce were used us synonyms. berland in the proportions of 33.7 carbonate 



BALSA, a raft used on the South Ameri- of lime and 66.3 carbonate of baryta, 

 can coast, to laud goods through the surf. BASIGYNIUM, a stalk with an ovarium 

 Its floating properties consist of two air- at its apex proceeding from above the origin 

 tight bags connected by a tube, iuto which of the calyx. 



the conductor can conveniently blow addi- BASSO COXTIXUO, iynonymous with 

 tioual air to replace what may have escaped. Thorough Bass in music. 

 This is attached to the front of the raft, BASTARD SUGAR, a refuse sugar left in 

 which is made generally triangular, and ' the process of renn ng, the purifying of which 

 composed of sticks covered with matting, and ! would not remunerate the cost. It is known 



capable of ca rying four persons or a corre- 

 sponding weight of goods. 

 BAMDOCCIATE, the term given to signify 



commercially by the name of " pieces." 



BASTARD TUCK. Po NTING, a common 

 imitation of tuck pointing in brickwork. 



Dutch paintings of low life, from the Italian ! done by scraping out the joinings of the 

 nickname given to Peter laer who first .iis- courses, and putting in blue mortar, over 



tinguished himself for that class of subjects. 

 They were called "dirt-painting," or "rhy 

 parography," by the Greeks. 



BANXEROLE, a small flag used at reviews 

 to mark positions to be occupied by the 

 flanks of regiments in the manoeuvres. 



BAOBAB, the Adansonia digitata, a re- 

 markable tree of Abyssinia and Western 

 Africa, which grows to a great age and extra- 

 ordinary thickness compared with its height. 

 They are frequently thirty feet in diameter, 

 and not more than double that high. 



which a pointing of white mortar is put. 



BAT HORSES and BAT MEN, men and 

 horses employed in the carriage of officers' 

 luggage during campaigns. 



BATARDEAU, a water-tight gate with a 

 sluice-gate, used in dividing the wet and dry 

 portions of the ditch of a fortification. 



BATH METAL, an alloy composed of copper 

 and zinc, in which the proportion of zinc u 

 greater than in brass. 



BATHYBIUS, a name given to a supposed 

 protoplasmic covering found in deep sea 



Adanson saw some which he calculated must , beds, though, possibly, only an organic sedj- 

 have been six thousand years old. Though meut in a state of decomposition, acted upoa 

 this has been doubted, there remains in by some aquatic fungoid, 

 support of it the jreat botanical fact that| BATHYMETRIC ZONES, a series of zones of 

 there is no limit to the life of an exogen, if relative depth or elevation under recent 

 It be supplied with an adequate amount of scientific investigation for defining the 

 fertilising soil to enable it to maintain its various altitudes or depths at which vital 

 vigour. organisms are distinctively distributed both 



BAPHIA, a genus of leguminous trees, one on land and in water. These zones are a 

 of which, B. nitida, supplies the barwood or 'good deal modified by local circumstances, 

 camwood used as a dye-wood. but they are pretty well defined in most 



BARBADOES NUTS, the violent purgative , instances. The terms employed in defining 

 fruit of Jatropha Curcas. aquatic zones are, Littoral, Circumlittoral, 



BARBICAN, a watch tower; also, a tower i Median, Inframedian, and Abyssal; taking 

 or fort at the end of a bridge, to guard the the first in order downwards, 

 passage, or the outer work for the defence of BATONNIER, a name given in France to the 

 a fortification. The name is also given to president elected by any fraternity or society, 

 loopholes or apertures in the walls of forti- j especially that of the Society of Advocates, 

 ficatious from which the enemy may be fired ' from whose practice of carrying the baton or 

 at. I staff of their society .with the flag of St. Nicholas 



BARKING IRONS, a series of instruments upon it, the name arose. It is doubtless to 

 consisting of knives and chisels of appro- the same origin we owe the epithet applied 

 priate shapes for separating bark from trees; to lawyers of " Clerks of St. Nicholas," and 

 or scrub- wood, for the use of tanners, &c. possibly " Old Nick," from their being 



BAROSCOPE, an alternative name given to looked on as the devil's servants. 



