iv AMERICAN HOMES AND GARDENS July, 1912 
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Clinton Wire Lath is Unsurpassed 
for use in exterior as well as interior plaster work. A wire mesh made up of 
drawn steel wire of high quality, galvanized after weaving, and provided with 
our famous V-stiffeners affords the ideal material for supporting stucco. 
Its unusual strength and rigidity prevents buldging or sagging. Smooth 
even surfaces are readily obtained while its stiffness and perfect key for the 
plaster eliminates all danger of cracking. 
In use for more than fifty years Clinton Wire Lath has proved its 
durability. It is everlasting and absolutely will not rust away. 
Write for descriptive matter 
= 
Just Published 
Motion Study 
A Method for Increasing the 
Efficiency of the Workman 
By FRANK B. GILBRETH 
CLINCH rightthrough the 
standing seam of metal 
roofs. No rails are needed 
unless desired. We makea 
similar one for slate roofs. 
Send for Circular 
Berger Bros. Co. 
PHILADELPHIA 
@ This is a scientific investigation of the conditions govern- 
ing the number of motions made by workers, and the 
methods of reducing this number. The author has dis- 
covered that many factors, such as physique, race, 
nationality, early training, nutrition, tools and appliances, 
have a bearing on the subject, and these various influences 
are discussed in the order of their importance. He shows | 
that the manner of supplying the workman with his raw 
material has an important bearing on the number of mo- 
tions made. Since fatigue will influence greatly the 
} methods of doing work, it is important that the raw ma- | 
terial be placed in a position which will require the least 
number of motions to transport it to its final position, thus 
producing the least fatigue which is proportionate to the f 
number of motions made. 
@ The book is concisely written and should be studied | 
by every manager and employer of labor who is interested 
in reducing labor cost. 
| G 12 mo, 5% x 734 inches, 135 pages, 44 illustrations. 
Price $2.00, Postpaid 
Aa NN & CO., Inc. 
' 361 Broadway, New York 
A} and ae Netting (Chain tao Fences for Estate 
Boundaries and Industrial Properties—Lawn Furni- 
ture—Stable Fittings. 
i F.E. CARPENTER CO., New York iy 
ani us 
PAINTING CEMENT BUILDINGS IN 
GERMANY 
HE publication in Daily Consular and 
Trade Reports of an article on build- 
ing methods in Hamburg contains inter- 
esting notes in regard to the class of paint 
used on cement structures in Germany 
that will be of interest to American read- 
ers. 
“Tt is claimed that large amounts of 
money are expended in the United States 
in painting cement and concrete, with un- 
satisfactory results, the paint either peel- 
ing or discoloring rapidly. 
“According to information obtained 
from builders and architects, the princi- 
pal precautions taken in northern Ger- 
many to prevent the peeling of oil paints 
is to defer their application until the 
cement is quite dry. When it is intended 
to apply color on outside walls which are 
still damp, water paints are used which 
are weather proof and which can be 
washed if necessary. These colors, neces- 
sarily, are not impervious to moisture. 
“In his textbook for 1910 Dr. Glinzer, 
director of the State Building School in 
Hamburg, says that to make oil paint ad- 
here to cement the surface of the material 
should be coated with diluted sulphuric 
acid (1 part concentrated acid to 100 parts 
of water), which afterwards must be 
washed off and the surface allowed to dry. 
Or the surface may be covered with di- 
luted silicate of soda (wasserglas), the 
solution to be 1 to 3 or 1 to 4, and applied 
three times in succession. Still another 
method is to apply two coats of building 
‘fluat’ at least twenty-four hours apart. 
Practical builders state, however, that the 
applications of sulphuric acid are not 
made by them, and that such success as 
they have results merely from careful 
work and the use of good materials. Dr. 
Glinzer also says that oil paint should be 
applied to cement in the following man- 
ner: The surface is given one coating of 
linseed-oil varnish, to which is added a 
first coat of white lead when the varnish 
is dry. A second coat is then added, also 
containing white lead together with more 
or less coloring matter, as the building 
laws forbid the use of absolutely white 
paint on the exterior of structures. In 
this climate the use of oil paints is recom- 
mended, as they are waterproof and pre- 
sent smooth surfaces which attract a mini- 
mum of dirt. Painting according to this 
method costs here about 10 cents per 
square yard. 
Applied to iron, linseed-oil varnish when 
used by itself flakes off readily. It should 
be thoroughly mixed with red oxide of lead, 
caput mortuum, or ocher graphite. This 
mixture serves as a first coat after the per- 
fectly clean and dry surface has been gone 
over with the ordinary hot linseed-oil var- 
nish. When the dead color has dried, an- 
other coat of the color desired is applied. 
The oil, being partly converted into resin, 
combines with the coloring material, making 
a thick coating that is the more impervious 
to water accordingly as the color is finely 
ground or not. Lead should be used when 
the paint is exposed to water. 
The water colors so frequently used in 
Germany as a rule have silicate of soda as 
their base. These colors can be used on 
cement, plaster of Paris, brick, or glass. 
Liquid casein paints are easily worked and 
are said to be durable. The discoloration 
of cement buildings results very frequently 
from the class of cement employed rather 
than from the color applied afterwards.” 
