In considering the subject of Building Construction, the most natural and convenient course would, perhaps, be first to describe the materials in use for building, and then to explain the forms and methods in which they are used.

As these Notes, however, are intended to aid in preparation for a particular Course, the order of subjects laid down in the Syllabus for that Course will be followed as nearly as possible, and the description of materials will therefore be left for Parts II. (Advanced) and III. (Honours).

It is hoped that the student will find that the very slight general knowledge of building materials which he must be assumed to possess, will enable him to understand all that is brought before him in this Part.

The writer of these Notes has endeavoured as far as possible to acknowledge his indebtedness, wherever he has taken informa-mation or illustrations from any published works. It has been impracticable to do this in every case, and it would be difficult to give a long list of all the authorities consulted.

Special mention should, however, be made of the works named below, whence much assistance has been derived, and to which the student may be referred for more extensive information regarding the subjects herein treated upon.

Adam's Designing "Wrought and Cast Iron Structures.

Dempsey's Builder's Guide.

Gwilt's Encyclopaedia of Architecture.

Hurst's Architectural Surveyor's Hand-Book.

Laxton's Examples of Building Construction.

Matheson's Works in Iron.

Molesworth's Pocketbook of Engineering Formulae.

Newland's Carpenter's and Joiner's Assistant.

Nicholson's Works.

Pasley's Practical Architecture (Brickwork).

Bankine's Civil Engineering.

Reed on Iron Shipbuilding.

Seddon's Builder's Work.

Tredgold's Carpentry (1870 edition); also a new, valuable, and greatly extended edition by Mr. Hurst, C.E. Unwin's Wrought-Iron Bridges and Roofs. Wray's Application of Theory to the Practice of Construction (revised by Seddon). The Professional Journals.

Caution. - Some of the drawings, which appear to be isome-trical projections, must not be measured to scale, as they are purposely distorted in order to bring important points into view.