Produced by Chris Curnow, Harry Lamé and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The Internet Archive) +-------------------------------------------------------------------+ | | | TRANSCRIBER'S NOTES: | | | | | |Formatting and coding information: | | - Text in italics is marked with underscores as in _text_. | | - Bold-face text is marked =text=. | | - Superscript x and subscript x are represented as ^{x} and _{x},| | respectively. | | - sqrt(x) represents the square root of x. | | - [oe] and [OE] represent the oe-ligatures. | | - Greek letters are written between square brackets, as in [tau] | | or [theta]. | | - Overlined 1 is represented as [=1]. | | - [<] represents a 'rotated [Delta]'. | | | |General remarks: | | - Footnotes have been moved to directly below the paragraph they | | refer to. | | - In-line multiple line formulas have been changed to in-line | | single-line formulas, with brackets added when needed. | | - The Table of Contents has been corrected to conform to the text| | rather than to the original Table of Contents. | | - The table on operating costs of trains gives 'Other expenses | | per square mile.' This has been changed to 'Per mile' the same | | as the other expenses. | | - The table on dimensions of farm and road locomotives gives the | | diameter of the boiler shell as 30 feet, which seems unlikely. | | - Feet are sometimes used as unit of area, both knots and knots | | per hour as unit of speed. | | | |Changes in text: | | - Reference letters in the text have in several cases been | | changed to conform to the letters used in the illustrations. | | - Minor typographical errors have been corrected. | | - Except when mentioned here, inconsistencies in spelling | | and hyphenation have not been corrected. Exceptions: |