BIOLOGICAL SURVEY OF WOODS HOLE AND VICINITY. 43 
TABLE 4.—TEMPERATURE AND DENSITY: BuzZARDS BAy, NOVEMBER, 1907. 
. . Depth in Air Surface | Surface | Bottom | Bottom 
emrerature station. Date. athens temper- | temper- density temper- density 
| ature. ature. |(at15°C.).| ature. |(at1s5°C.). 
TM obo Sha AOSD: AOR e DOs IONE RO OIAD ho SOODE ek tae eee Nov. 13 3 35-0 46.3 I. 0214 49-8 | I.0220 
ee od oer 6: 6 SARS SBOE COBO Ick ete aie ie ee eer ¥- dors... 2% 37-0 47-7 I. 0228 49-4 I. 0229 
Bas vp POE cio GU TOS GREE GCOS A AEs Sei rr 2 ae HG. se; 6 34.0 48. 2 I. 0228 50. I I. 0229 
RPE SYP ars 5 nfo OO ec icie ro chs ulate lala la ute ater evetete visto erefied s dos28: 4% 43-0 48. 2 I. 0230 49-5 I. 0230 
TA ete TS EE eo abs onde aid el aede cits. doy.cs 6% 36.0 47-3 I. 0226 50.0 1. 0228 
TEL AA ASE So OR EICRIN GE UPeaee cites ABE ro See dozens % 35-0 48. 5 I. 0231 49-1 I. 0232 
MIT aria 270 Oar saya s ATED aye 5 lorcet eetare ew om Filo cine COtr ae 5 39-0 48. 7 I. 0236 49-3 I. 0236 
Aen Ee ocelot atte ck obo Niclus Sard veldmaradle sv eae] dorinss 8% 41.0 48.7 I. 0237 49-8 I. 0237 
ME Soc nyc Reais sie 214. « SRPTORER A 2 G4 cous thoMane te eneler Malta farareck © Osa e ss 6 33-0 49.2 I.0235 49. 8 I. 0238 
who 508 DBC O ORE Stc SERED ORCC Ee RINE Sts SEs Cir Porat ROO ee 5 41. § 48. 2 I. 0234 48.9 I. 0233 
RA ey chases (ote wii = cc) esere ares nie ofp, el clo soRsieisiolerere SlefePet cisisieeel doves: 7 42.0 | 49:7 I. 0237 50. 5 I. 0237 
RMR cisins si therclabescroc-ace Me Darth ov! sce Mblonio v.cyeeeretinnee is bao N a 8% 43-0 49-5 I. 0237 50.1 I. 0237 
MEISE occ rene oe cate neeine come tema nee nanee Nov. 15 6 38.0 47-2 I. 0238 47-5 I. 0237 
Mee Sales atae a hotaeaa Ween REE ABcas 6 ore oe ofeea cae suelo | EGO. 3..- 6% Baie 48.0 I. 0238 48. 5 I. 0239 
UC ooh COO O ROSE SU UGC ROS RBS Hocic tae anne aEnn nner ewido? <% 5 35-5 48. 5 I. 0238 48. 8 I. 0238 
RMT ors craton oO vices De eeices rane lslsicalopaelatietre ee Hees Oo paeae 36.0 48. 6 I. 0239 50.0 I. 0240 
NDP ete, siecresaie = aiclnecierareroanavs sjapniaetiers ajsimain sie Se oe S GOs .n... 5%4 36.0 48.7 I. 0238 49.1 | I. 0239 
SaaS tees chat Na Sears ce ia etal foielare oreisiea riche clatare wattle emis sibs dot. 6% 39-0 47-9 I. 0236 49-1 I. 0236 
RT eR charerateret TS Ss eu epics setae tid ahs otigamteins er dos... 15 40.0 49-7 I. 0237 50. 5 I. 0237 
+s Sy {HOU ADS CORRE: D BR BOO UES TEAEO ESN AD EAD Marans ase Ga yabee 6% 39.0 49-7 I.0240 50. I I.0240 
MM rerprevavassta (tales /aisiais ajer™ ere relaiere © ecw o aieiostierels,s\atelenejs jae. eieye elefeie don sc. 7 43-0 48.7 I- 0236 49-0 I. 0236 
NEY oe ete cr ch Talos care ate ie oie ts oie eve fare ohcvat@iandiaie ei tiave os miainia als 3e 000s oes 17 40.0 49-7 I. 0240 50.4 I. 0240 
MCA, secwteyeic ccichs sis s.a/sieis) sini exserstre vie at cleie peiareceiessuei Jeet eee e elses eeeeees 38. 25 48. 50 | I. 02342 49-51 I. 02349 
| | 
November.—Temperature and density conditions at the middle of November, 1907, 
are shown in tables 3 and 4, the temperature conditions being shown on chart 212. 
When compared with the conditions during August, the chief facts to be noted are: 
(1) The great reduction in water temperature naturally resulting from the approach 
of winter. The mean of all the figures is 50.14° as against 64.91° during the August 
observations. 
(2) The comparative uniformity of all the figures, the extremes being 46.3° and 
52.5°, Showing a range of 6.2°, in place of a range of 16.5° as in August. 
(3) The exact reversal of the differences foundin August. Here the surface temper- 
atures are somewhat Jower than the bottom ones (average=49.78° and 50.47° respec- 
tively); the Bay is colder than the Sound (average=49.00° and 51.16°); and we meet 
with slightly higher temperatures as we pass toward the open ocean. This last tendency 
is not very evident in Vineyard Sound, but is quite marked in Buzzards Bay. All 
these differences are, of course, quite intelligible. At this time of the year the air tem- 
perature has become much colder than that of the water. It is natural, therefore, that 
the surface of the sea should cool more rapidly than the bottom, and that the shallower, 
more sheltered waters should cool more rapidly than the open ocean. 
