Applying traps to gravity steam-apparatus. Expansion of brass and iron pipe. Connecting steam and return risers at their tops. Power used in running hydraulic elevators. On melting snow in the streets by steam. Action of ashes street fillings on iron pipes. Arrangement of steam-coils for heating oil-stills. Converting a steam-apparatus into a hot-water apparatus and back again. Condensation per foot of steam-main when laid under ground. Oil in boilers from exhaust steam, and methods of prevention.

Address, Book Department.

The Engineering And Building Record, No. 277 Pearl Street, New York. Obtainable at London Office, 92 and 93 Fleet Street, for 15s.

The Kelly Self Acting.

The same apparatus will be furnished with Wash-out with Front, Back, or Side Outlet, Straight Hopper, or with Short Hopper and Trap; all Earthen. We will furnish our Flushing-apparatus and Lock-pull with any Form of Hopper or Wash-out.

Our Water-closets will work in any place where any other Closet will work, and in many places where none others will work, as the tank is empty when the seat is not occupied, and cannot freeze.

No head-room is required for the tank, such as low ceilings, under stairs, etc. It has many advantages that common-sense people can see without comment Send for Circular.

Thos. Kelly & Bros., Manufacturers and Patsntbes.

75 Jackson Street, Chicago.

N. B. - The firm also manufacture Kelly's Stop and Waste Cock, the Kelly Sanitary Drip-tray, and a full line of specialties of their own invention.

Send For New Catalogue Boyle's Syphon Water-Closets Since the introduction of the No. I All Earthenware " Tidal Wave " Closet, in the year 1881, no appliance has been invented that supersedes this closet in a sanitary point of view, either here or abroad. We have designed and are now manufacturing two modifications of the closet to suit the various requirements that may arise, especially in cases where closets are to be substituted, and a change in the soil-pipe connection is to be avoided.

These closets, which we call the "Cascade" and "Tidal Wave No. 2," require the ordinary plumbers' trap underneath the floor, and they are just as suitable where the trap is already set.

Parties desiring a true sanitary water-closet will do well to inquire into the merits of these syphon-closets, and write us to send them illustrated and descriptive circulars.

We also manufacture and control the following specialties under Boyle's Patents:

"Mohawk" Wash-out Closet, "Gotham" and "Standard" Long and Short Hoppers and Traps, "New Departure" Wash-basins, "Standard" Urinals, and all the Carr Specialties in Water-closets, Bath and Basin Supplies, and Brass Pumps for House Use. ___

Henry Huber & Co., Manufacturers of Sanitary Specialties,

No. 85 Beekman Street, New York.

Hot-Water Heating and Fitting;

Or, Warming Buildings by Hot-water.

A Description Of Modern Hot- Water Heating Apparatus - The Methods of their Construction and the Principles involved.

With Over Two Hundred Illustrations, Diagrams and Tables.

By William J. Baldwin, M. Am. Soc. C. E., Member American Society Mechanical Engineers, Author of "Steam-Heating for Buildings," etc., etc.

Graphical methods are used to illustrate many of the important principles that are to be remembered by the Hot-water Engineer.

The volume is 8vo., of 385 pages, besides the index; handsomely bound in cloth, and will be sent postpaid on receipt of $4.00.

Among the questions treated are the following:

Laws of Hot-water Circulation.

Flow of Water in the Pipes of an Apparatus.

Graphical Illustration of the Expansion of Water.

Graphical Illustration of the Theoretical Velocity of Water in Flow-pipes.

Efflux of Water Through Apertures.

Passage of Water Through Short Parallel Pipes.

Passage of Water Through Long Pipes.

Friction of Water in Long Pipes.

Quantity of Water that will Pass through Pipes under Different Pressures.

Diminution of the Flow of Water by Friction in Long Pipes.

Loss of Pressure by Friction of Elbows and Fittings.

How the Friction of Elbows and Fittings may be Reduced to a Minimum.

Flow of Water through the Mains of an Apparatus, Considered under its Various Practical Conditions.

How to Find the Total Head Required when the Quantity of Water to be Passed and the Size and Length of the Pipes are Known.

How to Find the Quantity of Water in U. S. Gallons, that will Pass through a Pipe when the Total Head and Length and the Diameter of the Pipe is Known.

To Find the Diameter of the Pipes for a Given Passage of Water.

How to Find the Direct Radiating Surface required for Buildings.

Henry Steeger, Manufacturer Of Copper Boilers.

Showers, Bath-tubs, Closet-pans, Pantry Sinks, Foot and Seat Tubs.

Dealer In All Kinds Of Tinned And Planished Copper I make my Bath-tubs all weights, 10, 12, 14, 16, 18, and 20 oz., and upward guaranteed.

Each Tub stamped thus 143 & 145 E. 31st Street, New York.

How Heat is Lost from the Rooms of a Building.

Simple Formula for Finding the Radiating Surfaces for Buildings.

Experiments by Different Authorities on Radiating Surfaces.

To Find the Amount of Water that should Pass through a Radiator for a Certain Duty.

How to Determine the Size of Inlet and Outlet Pipes for Hot-water Radiators. iagrams Giving Graphical Methods for Finding the Diameters and Lengths of Flow and Return Pipes for Hot-water Apparatus.

Proportioning Coils and Radiators of an Apparatus for Direct Radiation.

Description of Different Systems of Piping in Use.

Proportioning an Apparatus for Indirect Heating.

Illustrations of Boilers.

Hot-Water Heating in the State, War, and Navy Department Building.

Hot-Water Heating in Private Residences.

Boilers Used for Hot-water Heating.

Direct Radiators Used for Hot-water Heating.

Indirect Radiators Used for Hot-water Heating.

The Effect of Air-traps in Hot-water Pipes.

Expansion Tanks - and How they should be Prepared.

Danger of Closed Expansion Tanks.

The Various Valves Used for Hot-water Heating.

Air-Vents Used for Hot-water Radiators.

Automatic Regulators Used in Hot-water Heating.

Special Fittings for Hot-water Heating.

How to Conduct Tests of Hot-water Radiators.

Method of Connecting Thermometers with Hot-water Pipes and Radiators.

Tables of Contents of the Pipes of an Apparatus.

Table of Co-efficients of the Expansion of Water from Various Sources, With an Ample Table of Contents from which the above Items were Selected; also an Alphabetically Arranged Index, the Whole Containing a Large Amount of Useful Information of Great Value to the Engineer, Architect, Mechanic and Householder. No Architect, Engineer, Steam-fitter or Plumber throughout the United States should be without a copy of this book. It is written in the simple style of Mr. Baldwin's former book, "Steam Heating for Buildings," and is within the ready comprehension of all.

Address, Book Department, The Engineering & Building Record,

277 Pearl Street, New York.

Obtainable at the London Office, 92 and 93 Fleet Street, for 20s.

Charles Perkes, Manufacturer Of Brass-Work for Gas, Water, and Steam, And Dealer In Plumbers Supplies and Sanitary Specialties. No. 627 Arch Street, Philadelphia, Pa.

Hugh Merrie. Established 1869. Henry Verhage Merrie, Verhage & Co., Manufacturers Of Lead-Pipe and Sheet-lead,

Dealers in Plumbers', Gas, and Steam Fitters' Supplies, Nos. 11 and 13 West 7th Street, Cincinnati.

Bailey, Farrell & Co., Manufacturers of Lead Pipe, Sheet-lead, Water, Gas, and Steam Goods, For Plumbers, Gas and Steam Fitters, Pittsburg, Pa.

Catalogue packed with first order.

The Jennings Water-closet, as made by The Thomas Gibson Company, has given satisfaction for years. Being now the only manufacturers of "The Jennings" in the United States, we will sell repairs or valves for closets made at one time by other parties, that have since given more or less trouble. We wish it understood, however, that our unqualified guarantee is for closets of our own manufacture only.

The Thomas Gibson Co., Sole Manufacturers of the Standard Jennings Water-closet.

273 Walnut Street, 64 & 66 Lodge Street, Cincinnati.