May, I9I1I 
WATERPROOF WALL PAINTINGS 
O* A finished background of mortar 
of lime, quartz sand, infusorial 
earth and water painting are pre- 
pared as follows: Painting ground: Four 
parts of quartz sand, 3.5 parts marble sand, 
0.5 part infusorial earth heated to redness, 
1.5 parts thick lime paste. After drying, 
the painting ground is to be coated with 
hydrofluosilicic acid and impregnated, sev- 
eral times with potash water-glass; earth 
colors which have been digested for a long 
time with potash water-glass are used. 
After dilution the silicic acid is sepa- 
rated by means of carbonate of ammonia 
from the water-glass, which remains in 
intimate combination with the colors. To 
the washed-out colors, hydrate of alum- 
ina and hydrate of magnesia are added; 
they are rubbed down and _ preserved 
in paste-like condition. The pictures 
are fixed by means of a spraying appa- 
ratus and a fluid obtained by heating 200 
parts of potash water-glass, 100 parts 
caustic ammonia, 10 parts caustic potash, 
and 12 parts marble powder, and decant- 
ing this from the residue. After fixation, 
which must be done four to five times, 
at a temperature of 100 deg. to 120 deg. 
F., the painting must be washed with 
carbonate of ammonia, then with water, 
and finally impregnated with a solution 
of paraffine in petroleum ether. 
TO MARK TOOLS 
OAT the tools to be marked with a 
thin covering of wax or hard tal- 
low by heating the steel, rubbing the 
wax over it while warm until it melts and 
then allowing it to cool. Now scratch the 
mark in it with a sharp instrument and 
pour on nitric acid, rinsing the acid off 
with water, after a time; finally heat the 
metal until the wax melts and wipe it off. 
The mark appears as though engraved. 
PREPARATION OF WAX POWDER 
ELLOW beeswax is cut into very fine 
shavings and protected from dust, 
and dried at ordinary room tempera- 
ture for 10 to 14 days. The wax must then 
be mixed in a mortar, having a rough sur- 
face, with an equal quantity by weight of 
rice starch. The mixing is effected at the 
lowest possible temperature without rub- 
bing. The powder mixture is finally passed 
through a fine tin strainer. 
TO TRANSFER AND FIX DRAWINGS 
ON IVORY AND VEGETABLE IVORY 
HE picture to be transferred is printed 
as a negative, by lithographic pro- 
cess, in a black fatty ink on a paper 
prepared for transferring in the well- 
known manner. By transfer printing, the 
picture is placed on the article to be 
decorated. The latter is rinsed in clean 
water and finally, light being excluded, is 
passed through a solution of nitrate of 
silver, then exposed to the effects of day- 
light. The parts free from fatty color are 
thereby tinted dark; the black color is 
washed off with exclusion of light in 
rectified oil of turpentine and the object 
immersed in a solution of hyposulphite of 
soda. Various colors may be obtained 
by the use of different substances sensi- 
tive to light, and by the use of baths of 
varying strength. 
By far the most complete collection of plans 
plates. One dollar each. Sold separately. 
MUNN & CO., INC, 361 BROADWAY, NEW YORK 
Cement and Concrete Work. III. Kinds of Cement Employed in Construction. IV. Limes, Ordinary 
Hydraulic. V. Lime Plasters. VI. Natural Cements. VII. Portland Cement. VIII. Inspection d 
Testing. IX. Adulteration; or Foreign Substances in Cement. X. Sand, Gravel, and_ Broken Stone. 
AMERICAN HOMES AND GARDENS xiii 
For Damp and Stained Concrete Walls 
Trus-Con Exterior Wall Finishes, applied with a brush, provide a 
damp-proof and protective surface to concrete walls-~enter into the surface 
pores, hardening and fusing with the concrete—conceal hair cracks—prevent 
staining and efflorescence - do not peel or crack off like paints. 
Trus-Con Wall Finishes are furnished in a variety of colors for use on concrete, brick 
and all masonry surfaces. Also Trus-Con Finishes for interior walls. 
Tell us about your walls. We will send Color Card anc detailed suggestions free. 
TRUSSED CONCRETE STEEL COMPANY, 
419 Trussed Concrete Bldg., Detroit, Mich. 
Trus-Con Floor Enamel for dusty concrete floors; Trus-Con Paste for water- 
proofing concrete; Trus-Con Sno-Wite for enameling interiors. 
SS ee SS See 
What You Gain by Using 
Cabot’s Shingle Stains 
Soft, rich, and beautiful coloring effects. 
Thorough preservation of the wood.* 
Low cost in both material and labor. 
Guaranteed fast colors. 
For Shingles, Siding, and other Exterior Woodwork 
Send for sample of stained wood. Free. 
Samuel Cabot, Inc., 131 Milk St., Boston, Mass. 
Agents in all central points 
wm Cobo re 
* ““Wood treated with Creosote 1s not subject to dry rot or other decay” — 
Stamed with Cabot's Shingle Stains Century Dictionary. 
Myron Huntand Elmer Grey. Arch'ts, Los Angeles, Cal. 
Do you want to learn how you can open, close and lock 
the shutters on your residence without opening the window, 
thus exposing yourself and your room to weather conditions 
and admitting flies and insects? Then write today for 
illustrated booklet on the Mallory Shutter Worker, which 
we will gladly send you without cost. 
Mallory Manufacturing Co. 
297 Bridge Street Flemington, N. J. 
No. 1. COTTAGE DESIGNS 
Twenty-five designs, ranging in cost 
from $600 to $1,500. 
No. 2. LOW-COST HOUSES 
Upward of twenty-five designs, costing 
from $1,000 to $3,000. 
ever brought: out. Illustrated with full-page "°.3- MODERN DWELLINGS 
Twenty designs, at costs ranging from 
$2,800 to $7,000. 
No. 4. SUBURBAN HOMES 
Twenty selected designs, costing from 
about $3,000 upward. 
JUST PUBLISHED 
Popular Handbook for Cement and Goncrete Users 
By MYRON H. LEWIS, C. E. 
Octavo (6% x 9% inches) 500 Pages, 200 Illustrations. 
Price, $2.50, Postpaid 
HIS is a concise treatise on the principles and methods employed in 
the manufacture and use of concrete in all classes of modern work. 
The author has brought together in this work, all the salient matter of 
interest to the users of concrete and its many diversified products. The 
matter is presented in logical and systematic order, clearly written, fully 
illustrated and free from involved mathematics. Everything of value to the 
concrete user is given. It is a standard work of reference covering the 
various uses of concrete, both plain and reinforced. Following is a list of 
the chapters, which will give an idea of the scope of the book and its 
thorough treatment of the subject: 
I. Historical Development of the Uses of Cement and Concrete. II. Glossary of Terms Employed ir 
Mortar. XII. Grout. XIII. Concrete (Plain). XIV. Concrete (Reinforced). NV. Methods and 
Kinds of Reinforcements. XVI. Forms for Plain and Reinforced Concrete. NVII. Concrete Blocks. 
XVIII. Artificial Stone. XIX. Concrete Tiles. XX. Concrete Pipes and Conduits. XXI. Concrete 
Piles. XXII. Concrete Buildings. XXIII. Concrete in Water Works. XXIV. Concrete in Sewer Works. 
XXV. Concrete in Highway Construction, XXVI. Concrete Retaining Walls. NXVII. Concrete Arches 
and Abutments. XXVIII. Concrete in Subway and Tunnels. XXIX. Concrete in Bridg 
XXX. Concrete in Docks and Wharves. XXXI. Concrete Construction Under Water. x 
crete on the Farm. XXXIII. Concrete Chimneys. XXXIV. 
crete Mausoleums and Miscellaneous Uses. XXXVI. Inspection for Concrete Work. 
proofing Concrete Work. XXXVIII. Coloring and_Painting Concrete Work. XXXIX. Method for 
Finishing Concrete Surfaces. XL. Specifications and Estimates for Concrete Work. 
MUNN & CO., Inc., Publishers 
361 Broadway, New York 
