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LYNN AND SAUGUS.

Microscopical Examination of Water from Walden Pond, Lynn.

[Number of organisms per cubic centimeter.]

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LYNN AND SAUGUS.

Chemical Examination of Water from Glen Lewis Pond, Lynn.

[Parts per 100,000.]

Sediment.

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15881 Jan. 14 Distinct. Slight. .33 3.55

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1.85 .0118.0250.0222.0028.44.0030.0002 .45 0.2 1.65 .0034.0152.0130.0022.30.0070.0002 .44

.0008.0188.0144.0044.40.0020.0001.32

0.2

0.2

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.0034.0260.0162.0098.43.0020.0000.32 0.2 1.60.0178.0498.0324.0174.42.0050 .0001 .50 0.2 2.70.0098.2136.0662.1474 .38.0000 .0001 .63

0.95 .0000.0188.0120.0068 .37.0020.0000.26 0.5 1.40

.0080.0001 .53 0.5

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NOTE to analyses of 1896: Odor, generally distinctly vegetable and frequently sweet and grassy. The samples were collected from the pond, near the gate-house, 1 foot beneath the surface. For monthly height of water in this reservoir, see page 219.

LYNN AND SAUGUS.

Microscopical Examination of Water from Glen Lewis Pond, Lynn.
[Number of organisms per cubic centimeter.]

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LYNN AND SAUGUS.

Chemical Examination of Water from the Saugus River at Howlett's Dam, Saugus.

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15882 Jan. 14

16046 Feb. 11

Slight, 0.70 8.00 milky. Distinct, Slight, 0.70 5.20 clayey. earthy. 16230 Mar. 10 Slight. Blight. 0.70 5.45 16408 Apr.14 V.slight. Slight. 0.68 5.20 16585 May 12 Distinct. Blight. 1.20 7.25 16755 June 9 Blight. Slight. 1.30 8.15 16981 July 14 Distinct. Slight, 0.93 4.45 brown. 17172 Aug.11 Slight. Slight. 0.90 9.20 17382 Sept. 8 Slight. Slight. 0.70 10.60 17601 Oct. 7 V.slight. Slight. 1.40 9.05 17880 Nov.10 Slight. Slight. 1.15 9.10 18037 Dec. 8 V. alight. Slight.

Slight.

2.75 .0266.0244.0206.0038 1.00.0600.0010 0.68 2.7 1.95 .0032.0220.0190.0030 0.51.0150.0003 0.65 2.0 2.40 .0008.0196.0184.0012 0.58.0080.0001 0.67 1.8 2.25 .0018.0226.0214.0012 0.52.0070.0005 0.66 1.8 3.65 .0000.0440.0358.0082 0.83.0030.0003 1.07 2.5 3.55 .0056.0442.0410.0032 0.86 .0030.0001 1.15 3.2 1.85 .0064.0378.0282.0096 0.42 .0000.0002 1.1 3.00 .0084.0408.0376.0032 1.26.0000.0001 0.88 3.5 3.20 .0018.0412.0370.0042|1.19.0150.0004 0.72 3.8 3.50 3.70 .0022.0388.0372.0016 1.18.0300.0003 1.13 3.1 0.88 8.40 3.20 .0050.0282.0246.0036 1.02.0500.0002 1.14 3.0

.0074.0482.0444.0038 1.01.0050.0010 1.53 3.5

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1894
1895
1896

1.16 8.68

3.36.0056.0810.0272.0038 1.03 .0112.0014 0.95

3.5

1.29 8.33 3.62.0064.0381.0349.0032 0.94.0125.0003 1.31 3.1 0.94 7.50 2.92.0058.0343.0304.0039 0.86.0163.0004 0.93 2.7

NOTE to analyses of 1896: Odor, distinctly vegetable and mouldy. The samples were collected from the river, at Howlett's Dam.

Microscopical Examination.

The average number of organisms per cubic centimeter found in these samples was 51.

LYNN AND SAUGUS.

Chemical Examination of Water from the Saugus River at the Line between Saugus and Wakefield, and just above the Point where it is joined by the Branch from Wakefield Centre.

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NOTE to analyses of 1896: Odor, distinctly vegetable and mouldy. -The samples were collected from the Saugus River, at a road crossing above Howlett's Pond, just above the point where the river is joined by the branch from Wakefield Centre.

Microscopical Examination.

The average number of organisms per cubic centimeter found in these samples was 47.

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