MIDWATER TRAWL WITH 



RESULTS OF PRELIMINARY 



DESCRIPTION OF AND 



IMPROVED 



SIBLE PLANKTON PUMP AND 



SION OF VOLUME OF WATER 



ERROR, VOLUME OF WATER 



THE VOLUME OF WATER 



OF THE VOLUME OF WATER 



THE VOLUME OF WATER 



OF THE VOLUME OF WATER 



MEASUREMENT OF WATER 



OF THE VOLUME OF WATER 



OF QUANTITY OF WATER 



OF THE VOLUME OF WATER 



AND THE VOLUME OF WATER 



AND THE VOLUME OF WATER 



AND THE VOLUME OF WATER 



ROR AND VOLUME OF WATER 



NG, AND VOLUME OF WATER 



VOLUME OF WATER 



THE VOLUME OF WATER 



ZE AND VOLUME OF WATER 



TO VOLUME OF WATER 



ERROR, VOLUME OF WATER 



OF THE VOLUME OF WATER 



OF THE VOLUME OF WATER 



OF VOLUME OF WATER 



LOSING NETS USED /WITH 



APERTURE AREA AND THE 



A HIGH-SPEED NET WITH A 



AND THEIR RATIOS OF 



RATIO OF MOUTH AREA TO 



TY + DISCUSSION OF 



OTHER FACTORS UPON 



PERCENTAGE OF 



EXPERIMENTS ON THE 



ON THE 



PUMP AND SHIPBOARD 



OR 4.3 SEA MILES AND 



SOME EXPERIMENTS ON THE 



ANALYSIS OF THE 



FILTRATION EFFICIENCY, 



SAMPLER " HAI " AT + 



-BUMPUS SAMPLERS .- 



USSION OF ITS EFFICIENT 



FLOW PATTERNS AND 



DISCUSSION OF THE 



OF ITS SAMPLING ERROR, 



OF THE JET NET, THE 

 ON THE FOLLOWING EQUIPME 

 A PLANKTON PUMP.- 



FOR 



BY 

 BY 

 BY 



FIELD TEST ON INTER-DEPTH CONTAMINAT 

 FIELD TESTS 

 FIELD TESTS 

 FIELD TESTS 

 FIELD TESTS 

 FIELD TESTS 

 FIELD TESTS 

 FILTER-CHANGER 

 FILTER SYSTEM. MODEL 3050, DATA SHEET 

 FILTERED AND AVOIDANCE. +NET. DISCUS 

 AND COMPARISON OF THE PUMP 

 AS TOWING SPEED, CLOGGING, 

 A CLARKE- BUMPUS SAMPLER 

 A NET, AND THE DEPTH OF 

 A NET, THE PRESSURE 

 BY A PLANKTON PUMP, WITH 

 BY PLANKTON NET BY MEANS 

 BY VERTICAL NET HAUL, AND 



DISCUSSION 

 + CATCHING ABILITY, 

 + REDUCED FOREWARNING, 

 + ESCAPEMENT, CLOGGING, 

 DISCUSSION OF SAMPLING ER 

 OF SAMPLING ERROR, CLOGGI 

 AND THE COMPARATIVE CATCHI 

 AND THE DEPTH OF THE NET 

 BY A HENSEN-TYPE NET AND HAR 

 CATCHING ABILITY, AND 

 CLOGGING, AND ESCAPEMENT. 

 ESCAPEMENT, AND AVOIDANCE. 

 SAMPLING ERROR, AND AVOIDA 

 ESCAPEMENT, DEPTH OF FISHIN 

 AND FLOATING DEVICES /FO 



FOR THE HARDY CONTINU 

 SIX TIMES THAT OF 

 FILTERING AREA/APERTURE AREA , THEIR 

 FILTERING AREA, AND THE SHAPE OF 

 FILTERING EFFICIENCY AND FLOW VELOCI 

 FILTERING EFFICIENCY OF THE PLANKTON 

 FILTERING MATERIAL UTILIZED, AND 

 FILTERING RATE OF MARU-TOKU TYPE 

 FILTERING RATE OF PLANKTON NET.- 

 FILTERING SYSTEM FOR SAMPLING SMALL 

 FILTERING 2.18 OR 2.84 CUBIC METERS 

 FILTERING- RATE AND THE RESISTANCE 

 FILTERING- RATE OF PLANKTON NET .- 

 FILTRATION AREA, MOUTH AREA, TOWING 

 FILTRATION CAPACITY OF THE PLANKTON 

 FILTRATION CHARACTERISTICS OF CLARKE 

 FILTRATION CHARACTERISTICS. + A DISC 

 FILTRATION CHARACTERISTICS, AND THE 

 FILTRATION COEFFICIENT AS A FUNCTION 

 FILTRATION COEFFICIENT, AVOIDANCE 



FILTERED 



FILTERED 



FILTERED 



FILTERED 



FILTERED 



FILTERED 



FILTERED 



FILTERED 



FILTERED. 



FILTERED. 



FILTERED. 



FILTERED. 



FILTERED. + 



FILTERED .+ 



FILTERED, 



FILTERED, 



FILTERED 



FILTERED, 



FILTERED, 



FILTERED, 



FILTERED, 



FILTERED, 



FILTERING 



FILTERING AREA 



FILTERING AREA 



442 

 593 

 439 

 808 

 703 

 227 

 191 

 201 

 052 

 891 

 501 

 385 

 593 

 013 

 408 

 109 

 661 

 636 

 675 

 527 

 329 

 125 

 635 

 533 

 791 

 033 

 741 

 899 

 501 

 703 

 597 

 268 

 844 

 111 

 924 

 151 

 408 

 233 

 085 

 227 

 455 

 437 

 665 

 903 

 291 

 497 

 054 

 399 

 842 

 827 

 767 

 349 

 351 



52 



