Damming; Diverting the Course of a Stream.
Surface Water; Underground Water. Trespassing, in Summer and in
Winter. Hunting and Fishing. Fruit Trees on Boundary Lines, etc., etc.
Contained in SCIENTIFIC AMERICAN SUPPLEMENT 166. Price 10 cents.

* * * * *

[Illustration: WROUGHT IRON.
BEAMS & GIRDERS]

THE UNION IRON MILLS. Pittsburgh, Pa., Manufacturers of improved
wrought iron Beams and Girders (patented).

The great fall which has taken place in the prices of Iron, and
especially in Beams used in the construction of FIRE PROOF BUILDINGS,
induces us to call the special attention of Engineers, Architects, and
Builders to the undoubted advantages of now erecting Fire Proof
structures; and by reference to pages 52 & 54 of our Book of
Sections--which will be sent on application to those contemplating the
erection of fire proof buildings--THE COST CAN BE ACCURATELY
CALCULATED, the cost of Insurance avoided, and the serious losses and
interruption to business caused by fire; these and like considerations
fully justify any additional first cost. It is believed, that, were
owners fully aware of the small difference which now exists between
the use of Wood and Iron, in many cases the latter would be adopted.
We shall be pleased to furnish estimates for all the Beams complete,
for any specific structure, so that the difference in cost may at once
be ascertained. Address

CARNEGIE, BROS. & CO., Pittsburgh, Pa.

* * * * *

ICE AT $1.00 PER TON.
The PICTET ARTIFICIAL ICE CO.,
LIMITED,
Room 51, Coal and Iron Exchange, P. O. Box 3083, N. Y.

* * * * *

[Illustration: H. W. JOHNS'
ASBESTOS]

LIQUID PAINTS, ROOFING, BOILER COVERINGS, Steam Packing, Sheathings,
Fire Proof Coatings, Cements, &c. SEND FOR DESCRIPTIVE PRICE LIST.

H. W. JOHNS M'F'G CO. 87 MAIDEN LANE, N. Y.

* * * * *

$10 TO $1000 Invested in Wall St. Stocks makes fortunes every month.
Books sent free explaining everything.

Address BAXTER & CO., Bankers, 17 Wall St., N. Y.

* * * * *

The "Scientific American" is printed with CHAS. ENEU JOHNSON & CO.'S
INK. Tenth and Lombard Sts., Philadelphia, and 59 Gold St., New York.

* * * * *

TRANSCRIBER'S NOTES:

[Symbol: right Index] and [Symbol: Left index] are used wh