Amount brought forward $19,003 60 Land for reservoir, only, - - 2,000 00

$21,003 60

Main pipe from Reservoir on Corey's Hill to reservoir on Beacon Hill, as in estimate marked

D., - - - - - - - - 189,279 00

Reeapitualation.

Brick Aqueduct, $806,348 10

Reservoir on Corey's Hill, - - - - 21,003 60

Pipe from Corey's Hill to Boston, - - 189,279 00

$1,016,630 70

PAPER MARKED K.
Distribution in the City.
Reservoir on Beacon Hill.

100 feet X 100 in clear and 10 feet deep.

Excavation 7,260 cubic yds. a 10

cts. over value of earth, - - $726 00

Wall for foundation of outside wall
13 feet deep 8-±-6= 7 feet thick
= 38,948 cubic feet at 20 cts. 7,789 60

Foundation walls for bottom of Re-
servoir. 19 walls 2 feet thick—
100 feet long 30,400 cubic feet
at 20 cts. .... 6,080 00

Bridging or bottom stone 10,000

cubic feet at 30 cts. - - 3,000 00

Outside main walls hewed bed and
build 4 X 10 X 424 = 16,960
cubic feet at 50 cts. - - 8,480 00

Brick bottom 2 courses 90 thousand
" sides 67 "

157 m. at

$20 per m laid, - - - 3,140 00

Roof of Wood (Slated,) - - 3,124 00

Land for Reservoir, - - - 39,200 00 $71,539 60

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Amount brought forward, $71,539 60

Reservoir on Fort Hill.

65 feet clear. To hold 50,000 cubic feet, 15 feet deep.

1 Concentric division or pier Wall.

Excavation 3,540 yds. at 20 cts.

above the value of the earth, - $708 00

Bricks 245,500 at $20 laid in ce-
ment, 4,910 00

Plastering bottom and sides, - 500 00

Covering with earth 5 feet deep

712 yds. at 15 cts. - - $106 80 6,224 80

Iron Pipes.

20 inch main pipe from Beacon to Fort Hill. 2,400 feet =2,541 including laps

at $6 53 per foot, - - - $16,592 73 Lead for 282 joints at 60 lbs. each

16,920 at 61 - - - - 1,099 80 Laying pipe at $2 00 per joint, - 564 00

Digging trench and refilling and

paving at 30 cts. lineal foot, - 720 00

3 stop cocks at $200—$600, and

lead and setting $38 94, - 638 94 19,615 47

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Amount brought forward, $146,941 68

Laying 2,529 joints, at $1,50, - 3,793 50

82,056 feet 4 inch service pipe, at

82 cts. .... 67,285 92

73,080 lbs. lead, at 6| cts. - 4,750 20

Laying 9,135 joints, at $1,25, - 11,418 75

214,712 feet 3 inch service pipe,

at 60 cts. .... 128,827 20

119,370 lbs. lead, at 6| cts. 7,759 05

Laying 23,874 joints at $1 25, - 29,842 50

Digging and covering 38,650 feet

of the 12, 10, 8 and 6 inch pipes,

at 30 cts. per foot. - - 11,595 00 285,765 feet 4 and 3 inch service

pipe, less 41, 059 laid by side of

main, 244,715 feet at 25 cts. - $61,178 75

Stop Cocks. 2 of 12 inch at $88 each $176 Lead and setting 16

5 feet 4 inch pipe 4 $196

27 of 10 inch - - - - 2190

12 of 3 " - 812

54 of 6 " - - - - 2964

194 of 4 " - 796L

448 of 3 " - - - - 15,460

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Fire Plugs. One to 500 feet of street, 447 at $t9, 1,00 each for setting, $20,00

each 8,940 8,940 00

Whole cost of distribution $544,504 84

Conveying water to, and distributing it at South Boston.
Main pipe from Washington street, through Northampton

street, and over the South Boston Turnpike, to Broadway in

South Boston.

12,456 feet 8 inch main, at $1 73

per foot, .... 21,548 88 26,296 lbs. lead, 6£ cts. per lb. - 1,709 24 Laying 1,384 joints, a $1 50, - 2,076 00

Amount carried forward, $25,334 12

Jlmount brought forward, $25,334 12

Trenching and refilling 11,880 feet,

at 20 cts. a foot, - - - 2,376 00

$27,710 00

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8,226 feet of 4 inch service pipe, at

82 cts., .... 6,745 32

9,140 lbs. lead, at 6£ cts. - - 594 10

Laying 914 joints, at $1 25, - 1,142 50

Trenching and refilling, at 25 cts.

per foot, .... 1,9S0 00

8,226 feet of 3 inch service pipe, at

60 cts. 4,935 60

6,398 lbs. lead, at 6| cts. - - 415 87

Laying 914-joints, at $1 25, - 1,142 50

Trenching and refilling, at 25 cts.

per foot, .... l ,9S0 00

8,473 97

Stop Cocks, 1,000 00 1,000 00

$47,645 69

Additional pipe for the supply of the south part of the City and South Boston, 551 feet 12 inch main, at $3 48

per foot, .... $1,917 48

1,769 lbs. of lead, at 6£ cts. per lb. 115 00

Laying 61 joints, at $2 00, - - 122 00

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Digging 8,325 feet in length, with refilling and

paving, at 30 cts. a foot, .... 2,497 50

$21,287 76

(The plan of distribution having been originally made on the supposition that the supply would be brought through Tremont Street, this estimate for additional pipes, which will be required in case the supply is introduced by way of the Mill Darn, was accidentally omitted in the recapitulation of the estimate, contained in the report, at page 39. In the same recapitulation there was an error in the estimate for lead, being $5,627, in excess. Correcting the amount as there given, then the distribution will stand, including South Boston, $673,214 instead of $657,554.

is

PARTICULARS OF ANALYSES OF WATERS.

Roxbury Labratory, May 24ih, 1837. To James F. Baldwin, Esq.,

Dear Sir—Agreeably to my promise, I hasten to give you in brief, the results of my analyses of the six specimens of water which have been received by me. Some experiments on the vegetable matter contained in several of the samples are in progress, and some time will necessarily elapse before its nature can be fully ascertained. Enough information relative to these specimens to enable you to make a choice of your source of supply from them, it is hoped, is contained in the following. I defer to a future time a more detailed account of their chemical qualities.

With much respect,

(Signed) A. A. HAYES.

Specimen No. 1. [Punkapaug Pond.] A slightly turbid water, of a light yellowish tint, and faint earthy odor, which disappears by exposure to air.

100,000 lbs. of this water give by proper processes, 2,964 pounds measures of mixed gases, composed of

Carbonic acid gas, - ... 1983
Nitrogen " .... 904

Oxygen " .... 72 2964

This mode of stating by bulks is preferred to the more usual mode by cubic inches, on account of the ease with which the mind perceives the relation of the dissolved gas to the volume of water assumed.

100,000 lbs.of this water, by slow evaporation, gives a light brown, earth like matter, which dried at 212° F. weighs 3.00 lbs.

When this matter is heated, the vegetable remains are burnt, and there remains of solid matter, but 1.20 lbs.

1.20 lbs. by careful analysis, afford

Of Sulphate of Lime (Gypsum) - 0.32 lbs.
Sulphate of Soda (Glaubers Salt) )
Chloride Sodium (Common Salt) \ 0.36
Muriate Magnesia (Bittern) 0.08
Silicious earth with clay, 0.27
Unconsumed coal and trace of Ox-
ide of iron, 0.24 1.20 lbs.

No. 2. [Neponset River.] The color of this specimen was nearly the same as No. 1, its odor was less distinctly earthy.

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