SEWAGE CONTAMINATION OF OYSTER BEDS. 915 
TABLE V.—Analysis of water samples collected over the Rocky Point oyster ground. 
Red colo- 
Dextrose nies on Buco Other fecal 
fermented.| litmus lac- X 4 bacteria. 
tose agar. 
Date and station. 
October 10, 1901, tide rising. 
Btation ll  SULMCEMLMDE 2. sc ctek ctancte dees cweessesoees 
GeCpRALD ee seen ee ait soc ce cee. ce cbetices a, 
2 SUTIACONMD 25 a5 saben <isess sels ae's aces aciceced 
MECDEUUDE ee erent seb cos ch eee tae cone 
3, Surface dabe.....2...---<- eee sssek Sete eaes 
deep suber ween ene ciem Vapi ects smecees 
PA SUTESCE ILO Rc 2 = Sev ccisticieeld secon ceeeecestts | 
deepriubers oss6 Sse c sche censeteeeeoeoee 
Ry NEIEEA CO PEULIG ats ck econ cosas Salsa ERR CCIM eS Cotten mo (ete FMA DS ca et Se ee Bee 
GeepyTHPOe nek oes cs: ole neneoemenee eat ens ere cal. wee a ee Ws ee 
We Nee se] 
steal eal ehectea ea al 
este tesa Ite 
October 19, tide falling (very low). 
Station al sumiacewtubezcc oo) esi cee cies eos eaee a 
Geepiiuberte. sce scene secu metas elects 
2 SBE COND Cran1-eic erecrcioe Sere rats sfensetcle sain ssi 
deep tuber. stsis ebeieloss eh se 
SSA COLO eee eee esc eee es cen care os 
Meep tubes 2. sc Sac oesacadscce cee ces teense 
ANISLINE CORbUDO te pean seme ee asicenina= ene ee 
cep De ee once een e oe ae teenie se actshiew 
OUSUMA COULD a acco oe -iseieclecawe sinaeicaiscivisis os 
Geepriebe te A BN ae ais poten cee eee 
PA seal ae 
steete alates lallipetpcetets 
+1 itti++14 
November —, 1901, tide falling. 
HeaMOnel GeepHtiGb ens. Seo BC. ee ioe lslecais isles seasons a 
DA GAEEDELLDE ees aremisciee asin Bacon ceicemennee 
Bb eres CP 101 Coy Se ee ay See ee ne ra 
AS CED RMD eR meee Pon eat secce ceiccenetssecell - tes eS Coe = eee 
ORGeGpN Ube lece cosa Lace ere cece andeeeane A. ATS POT Te a Sa pes) HSS a ae es eee 
sien esta 
Iles ieetea| 
Ue aieileel 
Taste VI.—Analysis of water samples collected in Warren River. 
Red colo- 
Dextrose nies on B. coli Other fecal 
fermented.) litmus lac- 1 OO. bacteria. « 
tose agar. 
Date and station. 
October 8, 1902, tide falling. 
SLAIOM El estinta COLLUDE haat saa oe sos = siete sacle eistcbis aciaials + a) Sig Lic eee le 
Geepriinbers soos So leke foe ee als + a) Ee!) ABRs 
DIGCepsbab ete spac on opee een pee eae scaeenhae o (a) Se ayes eae 
S510 {st 2) 0) 0] | YoY try pee ee rn Ree Se gh ae See eR et + (a) rei eres. mee 
4 SEED TMD Gy asics =.s2/alelnis asec aisje ssetelsiem ad coeie.s + (@) or. as Joe ae 
BUSUMLACE MME mse eee ceieen co oe nsec oemese ane a + aft Ae es 
Gee pitMbe pans sosteae ease k a caeceeieeen eave - _ eR (ee ee 
Gsuriaee UBee ee. 6 oes wigetee selon bn sere ee eee -- + — RE Ps 9 $e 
GEC HTD EG rain esc sae cen coeiersreieme ees eaee — — se Sea ate 
aNot made. 
From the above data it is apparent that the river after passing 
Conimicut Point is comparatively free from sewage. £2. coli was 
found in only two samples taken from this section, once in a sample 
from station 1 and in one sample from station 3; both these samples 
were collected at a very low tide, due to the change of moon. On the 
other hand, it will be noticed that nearly all the samples from the 
Warren River gave tests of 2. coli, but after the Warren River joins 
the Providence River this organism soon disappears from the water. 
Thus between 6 and 7 miles below the Fields Point sewer is another 
area of water from which nearly all traces of pollution have dis- 
