DISCOVERY REPORTS 



GEAR 



In the station lists the following symbols represent the various kinds of gear used : 



B Oblique. 



H Horizontal. 



V Vertical. 



BTS Small beam trawl. Beam 8 ft. in length (2-45 m.): mesh at cod-end J in. (12-5 mm.). 



DC Conical dredge. Mouth 16 in. in diameter (40-5 cm.), with canvas bag. 



DL Large dredge. Light pattern, 4 ft. in length (1-2 m.). 



DLH Large dredge. Heavy pattern, 4 ft. in length (1-2 m.). 



DS Small dredge. 2 ft. in length (o-6 m.). 



LH Hand lines. 



IVT 'T^\ 



N -Tl ^^^® ^^*^ mesh of 4 mm. or 7 mm. (o-i6 in. or 0-28 in.) attached to back of trawl. 



N 50 50 cm. tow-net. Mouth circular, 50 cm. in diameter (19-5 in.): 200 meshes to the linear 



inch. 

 N 70 70 cm. tow-net. Mouth circular, -70 cm. in diameter (27-5 in.): mesh graded, at cod-end 



74 to the linear inch. 

 N 100 I m. tow-net. Mouth circular, i m. in diameter (3-3 ft.): mesh graded, at cod-end 16 to 



the linear inch. From July i, 1927, this net was replaced by another, of similar pattern", 



but with the cod-end made of stramin with 11-12 meshes to the linear inch. 

 N 450 42 m. tow-net. Mouth circular, 42 m. in diameter (14-8 ft.): mesh graded, at cod-end 



7 mm. (0-28 in.). 



NC 50 Coarse 50 cm. tow-net. Mouth circular, 50 cm. in diameter (19-5 in.): 25 meshes to the 

 linear inch. 



NCS-N] 



-^p rp^Tow-net of coarse silk, with 16 meshes to the linear inch, attached to trawl or other net. 



NH Hand net. 



NRL Large rectangular net. Frame 8 ft. long and 2j ft. wide (2-45 m. x 0-7 m.) with bag of 

 2 in. mesh (12-5 mm.). 



NRM Medium rectangular net. Frame 4 ft. long and ij ft. wide (1-22 m. x 0-38 m.) with bag 

 of 7 mm. mesh (0-28 in.). 



OTC Commercial otter trawl. Head rope 80 ft. long (24-5 m.) : mesh at cod-end i| in. (3-8 cm.). 



OTL Large otter trawl. Head rope 40 ft. long (12-2 m.): mesh at cod-end ij in. (3-2 cm.). 



OTM Medium otter trawl. Head rope 30 ft. long (9-14 m.): mesh at cod-end i| in. (3-2 cm.). 



RM Mussel rake. 



TYF Young fish trawl. Mouth about 20 ft. in circumference (6 m.) : bag of stramin with 1 1-12 

 meshes to linear inch. Fished until July 1926 with poles and otter-boards, thereafter 

 attached to a circular tow-net frame 2 m. in diameter (6-6 ft.). 



Table I shows the number of times each gear was used in procuring the present 

 collection, and the number of species and specimens caught by each gear. 



