USERS. Prepared by A. A. Houghton..........Each 50c.

The author, in preparing this Series, has not only treated on the usual types of construction, but explains and illustrates molds and systems that are not patented, but which are equal in value and often superior to those restricted by patents. These molds are very easily and cheaply constructed and embody simplicity, rapidity of operation, and the most successful results in the molded concrete. Each of these Twelve books is fully illustrated, and the subjects are exhaustively treated in plain English.

CONCRETE WALL FORMS. By A. A. Houghton.

A new automatic wall clamp is illustrated with working drawings. Other types of wall forms, clamps, separators, etc., are also illustrated and explained.

(No. 1 of Series) .... ...............50 cents

CONCRETE FLOORS AND SIDEWALKS. By A. A. Houghton.

The molds for molding squares, hexagonal and many other styles of mosaic floor and sidewalk blocks are fully illustrated and explained. (No. 2 of Series) . . 50 cents

PRACTICAL CONCRETE SILO CONSTRUCTION. By A. A. Houghton.

Complete working drawings and specifications are given for several styles of concrete silos, with illustrations of molds for monolithic and block silos. The tables, data, and information presented in this book are of the utmost value in planning and constructing all forms of concrete silos. (No. 3 of Series)..........50 cents

MOLDING CONCRETE CHIMNEYS, SLATE AND ROOF TILES. By A. A. Houghton.

The manufacture of all types of concrete slate and roof tile is fully treated. Valuable data on all forms of reinforced concrete roofs are contained within its pages. The construction of concrete chimneys by block and monolithic systems is fully illustrated and described. A number of ornamental designs of chimney construction with molds are shown in this valuable treatise. (No. 4 of Series.).......50 cents

MOLDING AND CURING ORNAMENTAL CONCRETE. By A. A. Houghton.

The proper proportions of cement and aggregates for various finishes, also the method of thoroughly mixing and placing in the molds, are fully treated. An exhaustive treatise on this subject that every concrete worker will find of daily use and value (No. 5 of Series.)....................50 cents

CONCRETE MONUMENTS, MAUSOLEUMS AND BURIAL VAULTS. By A. A.

" Houghton.

The molding of concrete monuments to imitate the most expensive cut stone is explained in this treatise, with working drawings of easily built molds. Cutting inscriptions and designs is also fully treated. (No. 6 of Series.) .... 50 cents