Number. SPRINGFIELD. Chemical Examination of Water from the Canal which conveys Water from Jabish, Axe Factory and Broad Brooks to the Basin and Gale-house at Ludlow Reservoir. 7574 July 20 July 21 V.slight. Slight. 0.80 6.10 2.90 .0000.0196.0164.0032 .13 .0030.0000|| 1.1 8035 Oct. 12 Oct. 13 V.slight. V.slight, 0.25 3.00 1.60 .0004.0164.0146.0018.14.0000 .0005) white. Odor, very faintly vegetable. - The samples were collected from the canal at its outlet. Microscopical Examination. No. 7574. Diatomaceæ, Cocconeis, 1; Cyclotella, 1; Navicula, 9; Synedra, 10. Cyanophyceæ, Chroococcus, 4. Algæ, Chlorococcus, 1; Pandorina, pr.; Staurastrum, pr. Fungi, Crenothrix, 2. Infusoria, Dinobryon cases, 18. Vermes, Anurea, pr. Miscellaneous, Zoōglæa, 142. Total, 188. No. 8035. Diatomaceæ, Cyclotella, 1; Diatoma, pr.; Fragilaria, 1; Navicula, 2; Surirella, pr.; Tabellaria, 1. Cyanophyceæ, Nostoc, pr. Algæ, Staurastrum, 1. Infusoria, Dinobryon, 11; Peridinium, 1; Trachelomonas, 1. Miscellaneous, Zoöglæa, 6. Total, 25. Chemical Examination of Water from Higher Brook, in Ludlow. 7021 Feb. 16 Feb. 17 V.slight. V. slight. 0.20 3.10 1.00 .0006.0084.0060.0024.04.0070.0002 1.1 Odor, none.- The sample was collected from the brook near the dam. Microscopical Examination. Diatomaceæ, Diatoma, 2; Gomphonema, pr.; Meridion, 9; Navicula, 1; Synedra, 27; Tabellaria, 3. Algæ, Chlorococcus, 1; Cosmarium, 1. Infusoria, Peridinium, pr. Miscellaneous, Zoögloa, 80; Starch grains, 1. Total, 125. SPRINGFIELD, Chemical Examination of Water from the Basin of the Springfield Water Works at Color. Total. Loss on Ignition. Free. Total. Odor, none, becoming vegetable on standing. - -The sample was collected from the basin one hundred feet from shore. The basin was formerly an arm of Ludlow Reservoir, but is now separated from it by a dam. Microscopical Examination. Diatomaceæ, Cymbella, 1; Fragilaria, 4; Melosira, 301; Navicula, 1. Cyanophyceæ, Aphanocapsa, 4; Clathrocystis, 2; Calosphærium, 2; Microcystis, 3. Algæ, Pandorina, 221; Pediastrum, pr.; Scenedesmus, 15; Staurastrum, 10. Fungi, Crenothrix, 1. Infusoria, Trachelomonas, pr. Crustacea, Cyclops, 1. Miscellaneous, Zoöglæa, 153. Total, 719. Chemical Examination of Water from Ludlow Reservoir, at a depth of six feet DATE OF APPEARANCE. beneath the surface. [Parts per 100,000.] RESIDUE ON TION. Sediment. Color. Total. Ignition. Loss on Odor, generally distinctly vegetable and grassy, sometimes unpleasant, occasionally none; becomes somewhat stronger on heating. The samples were collected from near the middle of the reservoir at a depth of six feet beneath the surface, with the exception of No. 8329, which was collected from near the Cherry Valley waste-way at a depth of three feet beneath the surface. For heights of water in the reservoir at times when samples of water were collected see page 214. This reservoir is not now used as a source of water supply except in emergencies. 1.00 .0004.0384.0208.0176 .10 .0020.0000 0.8 1.70.0000.0434.0224.0210 .09 .0000.0000 0.8 0.8 .0000.0638.0268.0370 .10.0000.0007 .0002.0418.0288.0130||.10.0150 .0001 0.5 1.65.00001.0390].0220].0170 .12 .0050.0005 0.9 .0050.0425.0228.0197.09.0050 .0001 0.8 Albuminoid. SPRINGFIELD. Microscopical Examination of Water from Ludlow Reservoir, at a depth of six feet beneath the surface. Av. Number. SPRINGFIELD. Chemical Examination of Water from Ludlow Reservoir, collected at from two to four feet above the bottom. 0.27 2.94 Odor, generally distinctly vegetable and grassy, sometimes unpleasant, rarely none. were collected from the reservoir near the middle and from two to four feet above the bottom. For heights of water in the reservoir at times when samples of water were collected see page 214. This reservoir is not now used as a source of water supply except in emergencies. Microscopical Examination. [Number of organisms per cubic centimeter.] Day of examination, Number of sample, . Jan. 1.57.0130.0377.0225.0152 .08 .0057.0000 0.7 The samples 1891. Feb. Mar. Apr. May. June. July. Aug. Sept. |