r 
" 1 
i 
"'if:.. 
Baraga High School, Baraga, Mich., covered with 
J-M Transite Asbestos Shingles 
Make the Roof 
FIREPROOF 
as well as 
ARTISTIC 
J-M Transite Asbestos Shingles are 
made of Asbestos (rock) fibres and 
Portland cement, both minerals 
They are by nature immune to the destructive action of fire, water, acids, 
gases, chemical fumes, and climatic conditions. The longer they are exposed 
to the weather the harder and tougher they become. 
J-M Transite Asbestos Shingles 
are made of Asbestos and Portland Cement moulded into a homogeneous 
mass under hydraulic pressure. 
They provide a roof of indestructible rock — a roof that actually becomes 
more durable with age — a roof that is artistically beautifuL 
Supplied in sizes and shapes to meet any condition; one-eighth inch 
thick with smooth edges, and one-quarter inch thick with rough edges; in 
gray, mottled brown and Indian red. 
Write our nearest Branch for " J-M Transite Asbestos Shingle " Booklet 
Buildings of Metropolitan Sanitarium heated from 
Central Power Plant through 
J-M Sectional Conduit 
This model institution has done away with the dirt and labor of individ- 
ual heating systems and is saving large sums of money by the above plan. 
Many of the buildings are heated from the central power plant and al- 
though they are at a considerable distance, they get almost 100% efficiency 
out of the steam where the pipes are laid in J-M Sectional Conduit. 
This is the most perfect underground pipe insulation on the market. 
Absolutely watertight. Acids, gases and the chemical 
action of the earth do not affect it. Can be taken up 
and relaid without injury. 
Write nearest Branch for particulars and Catalog No. 1 12 
H. W. JOHNS-MANVILLE CO. 
Manufacturers of Asbestos Roofings; Stucco; Pipe Coverings: Waterpreofing; 
Sanitary Specialties; Acoustical Correction; Cork Tiling, Etc. 
Steam Pipes Laid in J-M 
Sectional Conduit 
Atlanta 
Baltimore 
Boston 
Buffalo 
Chicago 
Cincinnati 
Cleveland 
Milwaukee Pittsburgh 
Minneapolis Portland 
Newark St. Louis 
New Orleans Salt Lake City 
New York San Francisco 
Omaha Seattle 
Philadelphia Toledo 
Louisville Memphis 
THE CANADIAN H. W. JOHNS-MANVILLE CO .Limited 
Montreal Winnipeg Vancouver 223 
Columbus 
Denver 
Detroit 
Galveston 
Indianapolis 
Kansas City 
Los Angeles 
