Ci5MPARAri\E STUDY OF SCOMBROID FISIIES. :J97 



and line, ciistiug line, ordiuftrj' band-liuo, ti\)ll lino, niiil I )Uf< liuc— of \v]ii<-li 

 the third and fifth iiix? widoly used. The ordiiuii-y haud-linc is uwiiiy 

 so long as the depth of the fishing ground. The gaw coasists of a spi'oader 

 or a lever, to uluCh a sinker and a bag for tole bait are attiiclicd. The long 

 line is also hu'gely used. It is a di-ift line, suspended fi'om banvls by menus 

 of buoy-lines, weighed s )Uietinies ^\ith light weights. Ilorjks of these line.=; 

 are dressed with small pieces of sardine, saiu"el, or niiuikerel itself. The 

 arlifieial Ijait is seldom used. Gaugings of the hand-line are of worm-gut. 

 The hand-line gear is t sseutially like that fijr the sam'el. 



In the sterfish fishery- three kinds of hook and line are used ; — liaud-liue, 

 troll lii.e, and long hue. The ti'oll hue is mos!; j^wpular and eflScient. As 

 seerfishes are voraeioas, it is difficult to catch them witli baits of little motion. 

 And as they do not i-ome to tlie surface it is impossible to catch them with 

 rods. Gioüd fishing gi'ounds lie near sti'aits or rocky banks. The troll line 

 for the common seei-fish is like that for Seriola quinqueradiaia. Tbe length of 

 the gear is from about 40 to 200 m or more. Generally it is 60-100 m. 

 The line is taiTed and on it numerous small lead sinkers are distiibuted. 

 When the line is short the weight is heavy, but if it is long, the weight is 

 c(jmparatively light. The hook has a long shank and is angular iu form. 

 As seerfishes liiive ti'euchant teeth, about 20 cm of tlie snood is made of a 

 metallic wire. 



In the timny fisheiy, rod and hue, h;iud-Iiue, ti'oll line, and long line are 

 used. The long line is the most important. As tunnies are big and swift in 

 l(x;omotion, the gear must be thick, stout, and long. When tunnie? bite the 

 hook, they swim away at once furiously and iiTesistibly, until thej' are tired, 

 s;) that th<! gear must be sufliciently long to allow it. Lines ai'e generalh- 

 made of hemp, and the lower end of the snoods at least is served with fine 

 tliread or wire. To the gears for the timny, sinkers are seldom addcni. The 

 minimum length of gear for the timny is 200 m. The tunny long Hue is 

 very tliick, .strong and 400-500 m long, coiled iu a basket. Each Ijoa': 

 shoots out lines of 10-15 baskets. The hue is als> a cbift lino, suspended 

 at the intennediate depth by means of buoy-lines of 10-25 m. As the grounc- 

 line itself is thick and heavy, there is no need of sinkers. There are two 

 kinds of giu]ging3, —short and long. The formar is ca 12 m, and the latter 



