6 CONTENTS. 
Section I.—PHYSICAL AND ZOOLOGICAL—Continued. Page. 
Chapter V.. Theoretical considerations. ... 02.0.0. 60 6 chi seen neon als Sousa ete conus ee 170 
. Factors detersiining clistribistion 5 (3.205556). ape ko fe watts) bisiace ie alts teen wetter eed 170 
2. The local fauna as influenced by the character of the bottom............ 171 
4. ‘The influence of teniperatures (icin 0250: takes eahe al bin ese ne eae ape ken ae 
a. ‘The infigence of deptie 7,0 Parse . cree nent. tae ccte kia nate na eas etel olaainrs 178 
§. Position of the local fauna im zoogeography. «2220/6 cee e ey sabe en 181 
6. Comparative distributions of closely related species..................4.. 185 
7. Changes in the composition of the local fauna.............0......0...0005 190 
8; Concise: ee Pr Ia eR ey a Ne Salers eta are! once atcha ee eee ee Cee ene 192 
Bibliography for Sechior Be 5.1626 4 cles hi Bes eee ee chet neal eset aisiarjobera/ che a seen ea ee 193 
Description of dredging stations occupied during the present Survey......... ............ 201 
RAPES rs 27 oo Saa eos) eo earth ee PEs lee Oe ale ae bltie hye Wels, Soa ean AON os LeeLee eee ne 219 
SECTION TI.—BoTANIcAL. By Bradley Moore Davis: i013 oor a eeir cu oe eats eae ied | etree 443 
Chapter’®. Tatroductiont, (52 22 iat cie sets cates ont Sia siete 4 aia ha Nan Uap Man Leave veto env Rane 443 
II. Some factors affecting the distribution of algae at Woods Hole and vicinity........ 445 
Ba DHE CORSE IT Fae eraccrerete eictacs Mtetenete etches pate ofits a0 te POU eae et esas ios er ae 445 
2. The ‘bottom iit deeper water ./)522).2. hec.ae rc eats eee eae CALS Sul 
3. The*tides and tidal carremts: 520 S02 ce cecrae shales aan le ene ements 446 
4. Thereieet of ican NET: ac io seciceins 2 ae arian ein hope ee eee eee 446 
5. Depth of water. 2. fo. ee a clea eleic2 Sle enis w aiaioie'w las enantio 447 
[i Os 1 aaa Mc ear etal Ae) ria MLR eM ene SR RA RANE Tae tibli yk ae yc 448 
7, Demperature and seasonal) changes. 235 -..05 oF ota asec cage ee a erg nme 449 
&; Salimity of the waters. o'.0 02 cic saan soos tecgete a aihagne acter Ror ae e 452 
III. Characteristic algal associations and formations at Woods Hole and in Buzzards 
Bay and Vineyard song) i) es cating enls at wes wei Mek ean rea 453 
Algal associations). srw. cc tree eie netics siege ete ation hare one ee neem a shin iod tie Dans 456 
The cool-water sublitesral formation 6 $102). i's 6 Ceo tae eens Wee ete 468 
The warm-water sublittoral formation. (1... 2.4.) igi» os sinus: ale nee 470 
The Zostera formrabiom ei RCs Clee a es Ae eee en 472 
A winter sublittoraltaraiation 7 Pree s scsi sedis. Sue eldeae e ee ae eae 473 
‘The littoral formatonss) ss: .c ache ee tere Coe Eee eae ee 474 
The platiktot 7 eat apa ss ace Gee laa aka Ne ene LMI oda iatn baekog Hetty cene ete ae 475 
IV. A report on the alge of Spindle Rocks, Woods Hole Harbor.................... 476 
V. The distribution of marine alge in the deeper waters of Buzzards Bay and 
Vitie'y ar di Sota 6 i) atin cas Coe eae eg Ne 480 
t,, The middle revionsiof Buzzards! Bay. os. ce hes cay. lee eee eer 480 
2. The middle resionsof, Vineyard Sound 2 i a) nein. ete od ieee > 482 
3. Certain inshore regions of particular interest...) 30. oh 00.0): co vgs eae oe 487 
4. Some statistics relative to the distribution of alge in Buzzards Bay and 
Vineyard Sound: srr Msctvcute radon gta seacieg Per OE pas c= testa ty acai earaets 494 
Literature cited for Section Ll: oom. tesco eee rere Re ee CEA eS Cer teen 407 
OE GC): 7-4) Cae nn pee AA ira GE we hears tre eimai dino ee rl Weue, Hain ogioisiad aloinio OOo c 498 
