( 13 ) [BLO 



Binders. Long pliant shoots of hazel, ash, willow and similar 

 trees, which have length and elasticity enough to allow them 

 to be used for binding up bundles of fagots, making hurdles, 

 etc. 



Binding Joists. Beams in framed floors which support the 

 bridging joists above and ceilina joists below. 



Birch (Betula alba or Common Birch). Found in almost every 

 country. The wood is of a light brown colour, moderately 

 hard, plain and even in grain, and is easily worked ; it is, 

 however, unfitted for building piirposes. Birch squares are 

 imported from Finland for bobbin making and other uses. 



Bit. A tooth used in an. inserted tooth saw. 



Blackbutt (Eucalyptus pilularis). An Australian timber, moder- 

 ately heavy and very strong. Used for sleepers, paving, 

 telegraph poles and carpentry. 



Blackheart. A serious defect in timber, found especially in ash. 



Black Spruce (Picea Nigra). A North American timber, tough 

 and strong and only slightly resinous. Imported for making 

 packing cases, etc. 



Blackthorn (Prunus spinosa), " Sloe." A hard, tough wood 

 used for walking sticks. 



Blanket Rate. A rate to cover various specified services. 



Blanks. The rough sawed pieces from which spokes, handles, 

 chair rounds, lasts and other turned goods are made. 



Blaze. (1 ) To mark, by cutting into trees the course of a 

 boundary, road, trail, etc. ; or trees cut and numbered for 

 sale by auction or privately ; (2) The chips made by a 

 mortising chisel when at work; they are also called " cores." 



Bled Timber. Pine trees which have been turpentined. 

 Blind Lath. Thin planed laths used in Venetian blinds. 

 Blind Slat Planing Machine. Small four-cutter planing machines 

 specially suitable for planing blind slats or blind laths. 



Blind Slat Tenoning Machine. A machine for forming the round 

 ends on blind slats. The material is placed in the machine 

 and caused to revolve slowly while a series of saws cut the 

 tenon. 



Blind Stile Mortising and Boring Machines. Automatic machines 

 in which blind stiles are mortised or bored in pairs ; the 

 distance between the mortises being accurately spaced by a 

 notched bar, called a spacing bar, to which the stiles are 

 attached. 



Block. The stem or stump of a tree j a mass of wood or stone ; 

 the piece of wood upon which criminals were beheaded. 



