XII 
DEVICES FOR USE IN FISH HATCHERIES AND AQUARIA: Page. 
Fig. 1. Design for artificial pond with siphoid outlet....... GonoodtadkcnpaPsosedcnendass Kee 
2. A siphoid outlet for hatching and rearing troughs......... aithets/elats Gist cigs aregniosn locates 1029, 
3. Apparatus for cleaning hatching or rearing troughs......... SodooNenSAGouppodaS 1031 
4. Cleaning device for ponds and agitariatyas o/c mictetslalelolelels misisetsteleie olarctsicietel«lsiele\ele)sicir 1032 
5. Oxygenator and vacuum producer...............+++-- Sodadn0nsnodsene aievelayels 1033, 
6; Scraper for, preparing HSHyLOBe er yete rier el rele et = ayete olelctatele lets ielatstate) ei aSosadimad dag 1035 
FIsHWays: 
igs De RODEEES a eos ieteyo lates otalayehevatelatetata stele teanetelere totale ht laie vets 2acscs Sreteie coteletete tees stale seit 1045 
2, (Sram ys Sais Ce iealace’ « cuciale Biateietsts ioieleleistetele ere sole (atotave tote ohayste aiereterateletelsisiste iar nteke este 1045 
3. WVIEGLEK oy 212-5 iets) o agepovavotel oyniajareleKels ober sicieveleleleremisteletereietletete ei varsyate janousgbopomenone 1045 
Be Ste Ss crayct cletehaveol< lao wiove revels lelorste sol ctetate elpiote bor mtenetens inte ttetetetst ets tstetetersiaisi el elateierotelets 1046 
i ROSUEK a ralaisayeh rey ate mrel aie re etenele errekeae lets fe alone sion ine eee ete ee eta eee teeae te teed oe ce eel aero 1046 
6. Rogers...... (AE OSB ASS OO DR AUOHOT OD On soa TS MOS AGH AOD SAO RCC ein 1046 
7 fae) 3} 92002] REO On OO 8 Hoo DOM aIGDOOCON ODN OU OGRA IIGOS THO HONG bas CODA DEISOOO 1046 
CEES ELAS Binion coOodoN ade ondoodanns Sdooosaotaddo son Seraanogoonl deoeod aNooD 1047 
Oat SLEWEL 6. clasVeoratetotelanialeva byelelatejsvatelavelisistaia SOC RC ADOS ac dboASBOdtS GobloadanGaceD 1047 
LO! HAW aha (oo oie sw vicia btelouellaleyaielnleletelalalsjerafeta BEADS O DASA UO ood sods 6 AaAROMA SOE 1047 
PE ANUS S tie wr ets armteate enetore vain elisa velevelntatebatersiela pies atelerctotshstal «rarnieeaterets ates tetee vere @iike ckalione 1048 
2) MRICHALASOR'. cic atelvarstaidsielatel svetateipleialeteteleloleisters re Ae HOLA CHD COICO CRI OMS Chor 1048 
MGs LOCA  cojcie vials cineretetetetetays miatele te ravatate tele oinisters ae lefoeisiclere tar teiarele Saacuocdabscasdens 1049 
DAM CAM inte cicisiaia em aevamteeterereriemsiel: eyoayevaletelerare slajatayniaiars wave lovevelstets re fo, avalaiele.c,2/aserctarstane unis 1049 
DG AM CDOUAIGE cpscs otcrotefoseie eheteeste eta lalelna ste AD SOOO OOO SOUMU ig JUD ODO Caen Ss wats 1050 
16. McDonald..... Heaps ela lalasavoltlelelalen eters aero) steVelielavetovelere ehegs)evareraretsha sieves uel iversvanxemeierces 1050 
TT MSANTIOLE i) 2.5" arene foresee ater otehonete tot tielovere) «ats sal aatet cVarstetetelckeleieieus tiei cele teste ters ac Teear erate 1051 
LEER ST) qa RS BAP OnenE Oa SOOO AIHOO MS DODDOasoaKroaconbore. apanaocopondaaget 1051 
EQ pUR CCKEE et oie, caheieiiol's acai oaiotanereneiorhetetatets seve Ve skerilete re vatapensPeralere/ see elefey vets ere [afetecctetstel ovals 1052: 
20, VIM PLOVER GANl> smc, cce is Sleeve Seite eet kelm ine tere ivieat ett nial asia siete tates etatas ey araeeierats 1053, 
21. Adaptation of improved Cail fishway, constructed of concrete............... 1056-1057 
HABITS AND LIFE HISTORY OF THE TOADFISH, OPSANUS TAU: 
Diagram showin adhesive diskiof toadtésh epee. <i ciercielnie eivimieiel=(eis wate ielmialeis) ofa) seni aible eleie 1080: 
METHODS OF STUDYING THE HABITS OF FISHES: 
Bige:r. Longittdiaal'section of. rellecting water elas errs. slater). eteisole eieimrcininloieirielaverstalenele 1121 
2; Reflecting camera, SHOWN IU SCCEOM yr aterore oy eo sreya = oteio pa) sees fare rls oats noe cep 1123 
3 Nest iob horaed dace; (diag reir it SECUIOM 9s leue te reten- tas cene- State ca ated one telaie renee tect ates tenels 1126 
4. Diagram showing ceremonial behavior of horned dace.............0.0eeeeeeeeee 1128, 
5. Male and female horned dace during spawning act................ cece esse eeeee 1130 
AN INTENSIVE STUDY OF THE FAUNA AND FLORA OF A RESTRICTED AREA OF SEA BOTTOM: 
Fig. 1. Map showing Woods Hole region and adjacent portions of New England coast...... 1237 
2. Chart showing temperature throughout Buzzards Bay and Vineyard Sound in Au- 
PUASE Ss ene Gate iee nial sin [otrm 2 feimloialelb Peis iinheiaray bis iaas\lsl elle phake) a leNe oi ircrchtchis Inti kite Ine atareteas take iol <s 1238 
3. Chart showing temperature throughout Buzzards Bay and Vineyard Sound in 
Elo Ee en Mn eR a hyo eae aimuriar parioccoren.d a ortg 208 COOP DOr 1239 
4. Chart showing density throughout Buzzards Bay and Vineyard Soundin August... 1240 
5. Local distribution of the gastropod mollusk Tritia trivitiata.... 1... 0s. cece scenes 1241 
6. Local distribution of the polychetous worm Nereis pelagica............22+000-- 1242 
7. Local distribution of the polychetous worm Clymenella ltorquata..............+-. 1243 
8. Local distribution of the bivalve mollusk Yoldia imatula............+.+++e0eees 1244 
g. Local distribution of the sertularian hydroid Thuizaria argentea...........+..+--- 1245 
10. Local distribution of the common skate, Raja erinaced..... 2. eee ce cece eee e ences 1246 
11. Local distribution of the ‘‘window-pane” flounder, Lophopsetta maculata.......... 1247 
12. Showing localities at which the oyster, Ostrea virginica, or its shells, were taken...... 1248 
13. Local distribution of the bivalve mollusk Venericardia borealis..........002-00000 1249 
14. Local distribution of the actinian Alcyontum carneum....- sees e eee een e ene n anes 1250 
ILLUSTRATIONS. 
