It is clear, therefore, that in no engine can the diagram described by an indicator be a complete rectangle; but the more nearly it approaches to a rectangle, the larger will be the power produced at every stroke with any given pressure, and the area of the space included within the diagram will in every case accurately represent the power exerted by the engine during that stroke. 237.

Diagrams drawn on paper are copies of the ideas in the mind, and not liable to the uncertainty that words carry in their signification.

The diagrams taken of the engine and compressor show that the work expended in compressing one cubic meter of air to 4.21 effective atmospheres was 38,128 lb.

The book was profuse in diagrams, and each diagram was profuse in letters of the alphabet, but these he found uninforming.

The colossal diagram of streets and houses is an illusion, the opium dream of a speculative builder.