ILLUSTRATIONS. XIII 
AN INTENSIVE STUDY OF FAUNA AND FLORA OF A RESTRICTED AREA OF SEA BOTTOM—Continued. Page. 
Fig. 15. Local distribution of the “‘whelk,”” Buccinum undatum........-.0 ++ eee eee eens 1251 
16. Local distribution of the common scallxp, Pecten gibbus borealis.........+++2+05- 1252 
17. Local distribution of the ‘“‘smooth” or northern scallop, Pecten magellanicus........ 1253 
18. Local distribution of the common purple sea-urchin, Arbacia punctulata.........- 1254 
19. Local distribution of the green sea-urchin, Strongylocentrus drébachiensis.......... 1255 
20. Local distribution of the common starfish, Asterias forbest... 2... 00. c cece eens 1256 
21. Local distribution of the purple starfish, Astertas vulgarts... 2.0.2.1 cc eee tees 1257 
22. Local distribution of the ‘‘ boat shell,’ Crepidula fornicata.........02.0eeeeeeees 1258 
23. Local distribution of Crepidula convexa, a smaller species than the preceding........ 1259 
24. Local distribution of the hermit crab Pagurus longicarpus..... 1.6.66. cece ee eee ee 1260 
25. Local distribution of the hermit crab Pagurus pollicarts.... 0.06. cccee eee eee eees 1261 
26. Local distribution of the hermit crab Pagurus annulipes.. 2... ... ccc cee ee eee 1262 
27. Local distribution of the hermit crab Pagurus acadianus........... 00 cece eee aee 1263 
GASES DISSOLVED IN THE WATERS OF WISCONSIN LAKES: 
Fig. 1. Sketch map of Wisconsin, showing lake districts. ........... eee eeeeee eee eeeeee 1276 
*2. Lake Mendota. Chart showing vertical distribution of gases, carbonates, and tem- 
PELALHES, p)ABUATY 20, WOOO! aie 'a.< cyere ice < wins 6 snap aie) 00) 5/nie 4 dele) Al aye aia) si tim )e seis aib| mv o's 1277 
Blake Mendota aie PeEbDriary 25, TQ0Gs.'. 0 oes 5c.s.0e sie ons nisitiaieeas naje na sie 1278 
AemlbckesMendotay waren MaArChiv2t); NOOO). <x civ ocsim/sls,«\s\a:2 «.a) osm #\nsaroveleialelsvolpierers sip ayaa, 1279 
Reb akerMendotas. soe, APT's, LGUO'. 06 s:0.00,c.0/e apa eo a's wee ole sisig'vs s vlajels eels stslels als 1280 
Gaps RenMEHEOEA mea IG MAY As EQOO a5 ce ele) oie 6, aselsleysin's/evsis'c:ojs/s of sieveipiaialetelcceisis'alsho 1281 
Pep ioa Ker Menno kam seinen Vid Yat 2 TOO we. 6 wile einie\vinie o(a cis = mislminiens ere itharetaless ere\sleieiolels 1281 
ReebakerVendotae msamie: Mi ky 2 LOGO aie 2) seleain ms0/e'e ss \ataiare «/s/ojclalalsieisialayals/aje el bls eve/ee 1282 
Giel ake; Mendota mADIe, AUPUSE 1, QO. 2c y0s c50)2-0)e, «:0;c/2le'ainisie sie el nislsre elelelsiels)cialele eis 1283 
Topics Mendota. me ARHes OCEODEL G2 LQOO'., 5h6.0a.cie\s ci o/cietls Ble'slsisis aisjels.slejelelseleieoieierels 1284 
rmisrke Wendota- sw oAmMeyOCtObED Li; 1GOO. attics essai waists in wis faseie mielasiel©elaieye\sie.« atte 1285 
TomGreeniawes SAME, OCTOMEL 4;) LQOG:. & cysie\0r0: ays ciojesa ciarsicrecverecie sleleis eo: ovale ale (enarayece one 1286 
fowake Geneva. same, paptember 26, 1907 <6, 60 ccietarsiaie soles aierelsie.isielebersisleisie cies « 1287 
TH RNOMMEEAKe VeHSt pack. SAMle, JULY. 30; TOOG) 1a cic sca s a eects deyanie nie aieic ca’ oe 1288 
15>) Luotsand Island Bake, Sate, AUpiust 13, 1907 sc. csi. scl ecw canes eisle cle nwincs« 1289 
MOSP OUOUEC ARG Mai Gs ATO TISE 2 re TOO 7) ow ies a tesa) «oun eiel angel otacaval ela stateie(eielensi'e eal eiass, ere 1289 
Re eAS eye ens ATG eC TISEL Ag POCO re) ete orci te rare) serene love eVa.sieinlaievelt ecole elev leteleterete's 1290 
TSecOtter Lake: Same; AUoust 4, TGS.) 10s ofetsjaissteus:shsrete; epojeia, ole e's sere ale ee larassls alee cles: 1290 
TOME OL veta Wa Ker AMI, AUP TISH, 215) TOO7 a1. ce, olet ousisteincreiafaleiayeld pophchelele wer eibieieets, o(hini sie! ® 1291 
BO mans Wake: same, Ate SE 07) OTGOR cate elec cya)= nl) sere anaes ol clei sie\wieielicte slele a 1291 
VOLUMETRIC STUDIES OF THE FOOD AND FEEDING OF OYSTERS: 
Bice Wesiaimol water specimen (ClUp, ClEVAHOM «c1,6/s 6's vols sie wiv view ei sie/ wie eialelelels/e/sis\eieie. vies 1300 
SAE ESCO Lett aia sean seo cnatsree arco eies sel Soya ayaialavase «ate TOMAS ore Sy onatay eae aliara alerara Wea phales, 6 1300 
SSeS URA Ea ROSS SEC EI OMI UGA ING A PIL G2 oairal 0. feted eat ei wt athe) arojatstoheea) mta/elatats| alee? ats| aisle epee siaYole sins 1301 
gander same Gataus of thippiny) GEVICE’.\. i. cis cls cvs aiv/Ue ae eivie wiseiein oie sels viv ieinieleisics 1301 
6. Apparatus for extracting contents of alimentary tract of oysters................. 1305 
PLAN FOR AN EDUCATIONAL EXHIBIT OF FISHES: 
Fig. 1. Plan of fish hall in American Museum of Natural History, illustrating “corridor 
_ TG GIG) Gian ee CACC ane Sood edHnonepomceocnome mone aposnocedsopene. 1320. 
ap, Wee) Teel hI Bo NS Renee Damo ata cote Datbreroo pa Sodbonooce Coomoedto 1321 
3. Example of popular label for individual specimens. ...........00 ec eeee eee eeees 1322 
4. Example of descriptive case-label defining a suborder... 2... ... 2... see cece eens 1324 
5. An accessory label to illustrate a biological phenomenon. ...............0eeeeeee 1325 
6. Plan showing hall adapted to the ‘‘alecove arrangement” of cases...........00005 1326 
7. Diagram of fish case to be used in hall with “alcove arrangement”.............. 1327 
8. Plan illustrating “gallery arrangement”’ of fish exhibits...................0004- 1328 
g. Sketch illustrating combination of pictorial fish groups with synoptic method of ex- 
HAS OUCTOTI GRA nara eres Fuiehay rai aieis, Coal ofa, oles areca s secant abeiaiales ote eles: ai eta eleiauaveis mielevetarayaleve te 1329, 
