BIOLOGICAL SURVEY OF WOODS HOLE AND VICINITY. 39 
on August 20, as likewise on August 22; and stations in both Vineyard Sound and 
Buzzards Bay were visited for a second, third, and even fourth time on August 28 and 29. 
Thus, while it is not possible to present simultaneous readings throughout all the waters 
under consideration, the most extreme points were reached within a limit of five days 
(August 14-19); and such supplementary determinations were made as to eliminate 
confusion of results by seasonal change. A consideration of these supplementary 
temperature determinations, 41 in number, shows that, although they were made after 
an average interval of nine days, the mean difference (irrespective of sign) between the 
first and the later determination was 1.8° F. It will be noted also that in many cases 
the later temperature was higher, instead of lower, though, on the average, it was found 
to be about ;3,; degree lower. Moreover, a consideration of the chart (No. 219) repre- 
senting the mean annual temperature curves for the Woods Hole station shows that the 
variation in water temperature at the latter point during the entire period of the present 
observations (August 14-29) is, in this five-year average, but a trifle over 1° F. The 
variations within the limits of a single day, due to tidal influences, are doubtless more 
serious sources of error, at least for surface temperatures; but it was, of course, 
impossible to eliminate these. 
TABLE 1.—IEMPERATURE AND DENSITY: VINEYARD SOUND, AUGUST, 1907. 
j Depth in Air Surface | Surface | Bottom Bottom 
Temperature station. Date. rathoris! tempera- | tempera-| density |tempera-} density 
ture. ture. |(atzs°C.).| ture. |(atrs°C.). 
4 | 
MT NSS Taos lao BIC NAA Oe Gable Wis bIe Bus Se arp ubalersae estes Aug. 16 9% 67-3 68.6 I. 0239 68.8 I. 0239 
ES rere Seatac wists Se tierarAealnne weet eras bases doves 4% 67-7 68. 3 I. 0238 68. 1 I. 0239 
RENE Yoo retcafere Anise aciers aioistle. 2S cejdalaedistes-eo.tis agarose Gornces 7 68.3 67.6 I. 0241 67.4 I. 0237 
RP ec N cls a mtene aya s,cbeyavstcye siete ars aac meve?a ince nos ozel| eas dows. ss 1114 67.7 66. 8 I. 0237 66. 3 1.0242 
LD. ado o RSS URS ARS ee SRE RICE Art enieen me rarer Aug. 14 { Me Beerac dead otaecs ose I.0238 | 69.3 I. 0241 
ae ete a Stans rcs ete ele fetal ara lcs betta ciataisnvatere cle) apoyels Siclater l= Potale do..... 10% OBB Pasa ae I. 0239 68. 5 I. 0237 
US 37 300d 28d BEBO OH AEE Oe ata: DIT cintite Eaten era & Aug. 15 to 67.3 67.3 I. 0241 66. 9 I. 0241 
BORE TREALEN) enc 20 a ste a cychs Acie at cir ayaatevaieteus b areravasalarle: Ve Aug. 22 II 67.9 66. I. 0237 66. 3 I. 0237 
MPR ose = ia clara 8 of S10) <4 fa, Soavshina lai aiol Sveie\Siehaiw wlarsievsiauale wyaceie Aug. 16 9% 67.8 65.8 I. 0242 65.3 I. 0240 
TRUMP Re yarns cija's ccm dare aaa saad chiens Se ces odlees Aug. 14 9% 66.197) Ney Aaa bs I. 0235 67-5 I. 0239 
MRNAS AEN Rh pe EAN ancy Noles wr wha nee Ge ROIS Nee Aug. 22 10% 67.8 67.3 1.0234 65.5 1.0236 
Te sccccucneee © OER ELSE SAIS Aa ie Se NEE FOI Aug. 15 10 68. 3 67-3 I. 0240 67.4 I. 0239 
PINGS EICR LEU ere racer eee etae atavarei stats ols mivteletoreta'e lass ue diva Sonelons Aug. 22 10%4 67-3 64. 6 I. 0236 63.4 I. 0236 
fee ee Pe  R An sf ctatcicr sie e Ge ceases oe okies Aug. 16 68. 3 66. 3 I. 0239 65.3 I. 0239 
RTE I yf Bcc ia 'av Ana A take iteva 6 is bnalacdl be wis thats Aug. 14 1234 67.8 66. 8 I. 0240 65.5 I. 0240 
HC CRICALECU REN era ei Scie e mrt se miercne ao geile es ore nates Aug. 22 16 67.6 65.6 I. 0237 62.4 I. 0236 
eR ie sete aiais o5iche's.ieidee dev biiea cee iinlitests Aug. 15 6% 70.3 62.8 I. 0243 61. 4 I. 0243 
Shae ccendion oa dil ben tetas NOE Bao Ce aeons Aare rena Ire dome 1234 69. 3 65-3 I. 0241 61.1 I.0239 
ININTEDERECONRerraN ce Nein ara sls aides Ais aaa ais wa ae @etedioatstes NURSE Tel SCO Bes 68. 3 64-3 1.0238 60. 3 I. 0237 
NOD Se eS ePIC IS ol claoieiclnaaiahie ls samameolosten Aug. 14 9 67.1 65.8 1.0238 63. 5 I. O24 
Eee ca erator tcl ctars leetattetre a tialotctol uid diese via'e'e cae wip aie qed a cialwtere Aug. 16 to 66. 8 64.8 1.0239 60.9 I. 0248 
PPE PCALEE) an) SANE na eh racss ax Cecitcies boas wae deelawe Aug. 22 1234 66. 2 61.9 I. 0237 58.2 | 1.0237 
IPiGrepented)) ta aaaeee leh aede gcc ouvdee tenes daa coe’ 2 Aug. 28 13% 70.3 63-7 I. 0235 61.4 | 1.0238 
OR SES CRA OB etl Hole 2 aPC AS ete See ee eo Aug. 15 8% 69. 8 63.8 I. 0243 59-3 1.0243 
Dee yetakay ts siete ia S(ela Sine chet MOBV ERTS 56 EIR o's aio. odelelse seces’ Aug. 14 10 69. 1 69. 3 I. 0238 61.4 | 10239 
PM each ache 2 TSR etn c's Sauron bu oaan caas/s pe OGteert to 68. 7 62.8 I. 0237 586 } 1.024% 
"LI she GOOLE DIRAD OO ORE Dit ECC ES aOR CROC cer eRe Aug. 16 14% 64. 5 63.0 I. 0240 58.8 | 1.0239 
DT ratats rete tete s csi 2'c,=: ci shekesccess ines tehapeartin temic ak Gietaua eyalere piaeic aaa we do... 1134 64.9 62.4 I. 0242 59-2 I. 0236 
RUSE DCALEG) ecto rn nyse eg ORT E Riart ara aftiargeeabe wena Aug. 22 It 71.8 63.3 I. 0237 61.7 | 1.0237 
eMC EG TORLECKL) 5 sta aie ibra cra ravsimicte alaretecmn  teiets finan eiicoie's eg arora tens Aug. 28 11% 70.3 62.3 I. 0235 61.2 1.0234 
SVEN PIS esate las, os (0 claseracaldite ARRAS oie aibeva’s o'a's a¥eine aie Aug. 16 104 64.2 63.1 T. 0241 61 | 1.0241 
