JOG 



407 



JOI 



JET'SAM, \ 



JET'SON , > See FLOTSAM. 



JET'TISON . ) 



JETTE'. The border made round the 

 stilts under a pier in certain old bridges, 

 being the same with starling, consisting 

 of a strong framing of timber, filled with 

 stones, &c., to preserve the foundations 

 of the piers from injury. 



JET'TY-HEAD. A name given in the 

 royal dockyards to that part of a wharf 

 which projects beyond the rest ; but more 

 particularly the front of a wharf, whose 

 side forms one of the cheeks of a dock. 



JEW'ZL-BLOCKS. In a ship, two small 

 blocks which are suspended at the ex- 

 tremity of the main and fore-top-sail 

 yards, to retain the top-mast studding 

 sails beyond the sheets of the top-sails. 



JEW'S-HARP. A musical instrument of 

 a very imperfect kind ; by some called 

 the jaw's harp, because held between the 

 teeth when played. It consists of an 

 elastic steel spring, riveted at one end to 

 a frame of brass or iron, and having the 

 other bent and free to be struck by the 

 finger in playing. It is also called the 

 Jew's-trump, and often simply a trump. 



JE'ZIDS, or DAVASIN. A religious sect, 

 long settled near Mosul, the followers 

 of Yezid Ben Anisa, a Mohammedan 

 doctor. 



JIB. 1. The foremost sail of a ship. It 

 is a large staysail extended from the 

 outer end of the bowsprit, prolonged by 

 the jib-boom towards the fore-topmast 



head. 2. The projecting frame of a 



crane from which the weight or goods 

 are suspended. 



JIB-BOOM. In a ship, a continuation of 

 the bowsprit forward, being run out from 

 its extremity in a similar manner to a 

 top-mast on a lower mast. There is also 

 the flying jib-boom, which extends still 

 beyond the jib-boom. 



JIB-DOOR. In architecture, a door which 

 stands flush with the wall outside, so as 

 to appear as part of the wall. 



JIG'GER. In a ship, a machine, consist- 

 ing of a piece of rope about five feet long, 

 with a block at one end and a sheave at 

 the other, used to hold on the cable when 

 it is heaved into the ship by the revolu- 

 tion of the windlass. 



JIO'GER-TACKLE. In thips, a small light 

 tackle, consisting of a double and single 

 block, used on many occasions. 



JOB'BER. A person who undertakes 

 jobs or small pieces of work ; also one 

 who buys and sells for others : equivalent 

 to broker. Hence jobbing, the business of 

 a jobber. Stock-jobbing denotes the prac- 

 tice of trafficking in the public funds, or 

 the buying and selling of stock, with a 

 view to its rise or fall. 



TOG'OLE. A term applied to a particular 

 description of joint, thus to the joint 



connecting two stones or other bodies in 



^__ r - such a man- 



1 HSxtfilllft F-~ ~*~i ~5 ner that tne J 



I " mSn \Vv cannot sli 



1 -W///JW m\\\N\\> away with- 

 *~HLl/U O Jsvii : out Baring 



" r '~ ' * 3& ' the joint or 



joggle asunder. The separate part se- 

 curing the joint is more commonly called 

 the joggle. 



JOO'OLE-POST. In carpentry, a strut 

 post for fixing the lower ends of the 

 struts. 



JOHN BCLL. The well-known collec- 

 tive name of the English nation, first used 

 in Arbuthnot's Satire, the History of John 

 Bull. 



JOHN DOB-S , a fish , the Dory (Zeus Faber, 

 Cuv., Yarr.)common in the Mediterranean. 

 Among the superstitious, the Dory dis- 

 putes with the Haddock the honour of 

 having been the fish out of whose mouth 

 St. Peter took the tribute money, on 

 which occasion he is said to have left the 

 mark of his finger and thumb on their 

 sides. Both fishes are similarly marked ; 

 but, according to another legend, the 

 marks upon the Dory, are those of the 

 finger and thumb of St. Christopher, who 

 on occasion waded through an arm of the 

 sea, and caught a Dory during his pas- 

 sage ! Quin, the actor, and prince of 

 epicures, established the edible reputa- 

 tion of the Dory, and gave it the national 

 name of John, as a mark of high dis- 

 tinction. 



JOIN'ER. J The joiner's occupation is to 



JOIN'ERY. ) construct things by joining 

 pieces of wood. The finer wood-work in 

 the finishing of buildings is done by 

 joiners, as the ponderous parts are done 

 by carpenters. The art in the one case 

 is joinery, and in the other carpentry, but 

 the distinction is not always observed. 



JOINT, from join. 1. In anatomy, an 



articulation. 2. In botany, a knot or 



internode. 3. In joinery, &c., the junc- 

 ture of two pieces of wood, &c. 4. A 



limb of an animal cut up by the butcher. 



5. In stone-work, the name joint is 



applied to the vertical joinings, those 

 situated horizontally being called beds. 



JOINT-CHAIR. On railways, a chair 

 which secures the jointure of two bars. 



JOIN'TER, jointing-plane. The name 

 given by joiners to their largest plane. 

 Bricklayers give the name jointer to a 

 piece of iron bent in two opposite direc- 

 tions, sometimes used in securing the 

 joints of a wall when much strength is 

 required. 



JOINTING RctE, a rule used by brick- 

 layers to secure a straight face to their 

 work. 



JOINT LIVES, a phrase in insurance and 

 annuities, when the calculation is founded 

 on the contingency of one life dropping 



