Présentation de l'éditeur :
The original one-volume edition of the Treatise on Mathe matical Instruments having now been expanded into three volumes, this third volume is devoted entirely to the consideration of Surveying Instruments and of Astronomical I nstruments, fQ nning Parts IV. and Y. of the work. The additional space thus obtained has been employed by the A uthor, in the first place, in describing more fully the several varieties of the instruments treated of, and in giving more detailed and comprehensive illustrations of their application ;and, in the second place, in introducing entirely new chapters upon instruments for the determination of distances by obscr ati6tii,o and upon the measurement of altitudes bihe barometer and thermometer. A chapter has also been added tc Bixt V. upon the construction and use of theE quatirial, andonbtddly the form of instrument best adapted for jkh% examination cf those phenomena of the solar orb, which now eznvinajeo liixvih. attention from the scientific world. The Author is again bound to mention his obligations toM essrs. Elliott, who have kindly supplied several of the woodcuts that illustrate the volume, and toM essrs. Parkes andS on of Birmingham, who sent him a large number of instruments for inspection, among which were theD rawing and Mining Levels, described at pp. 87, 88. To these gentlemen, and to all from whom he has derived assistance in the preparation of this and the preceding volumes, the Author begs leave again to return his most sincere thanks, and ventures to repeat the hope already expressed in the preface to the first volume, that the skill of the workman may not appear to have been altogether inadequate to the manipulation of the materials suppH ed him.
(Typographical errors above are due to OCR software and don't occur in the book.)
About the Publisher
Forgotten Books is a publisher of historical writings, such as: Philosophy, Classics, Science, Religion, His
Présentation de l'éditeur :
This book was originally published prior to 1923, and represents a reproduction of an important historical work, maintaining the same format as the original work. While some publishers have opted to apply OCR (optical character recognition) technology to the process, we believe this leads to sub-optimal results (frequent typographical errors, strange characters and confusing formatting) and does not adequately preserve the historical character of the original artifact. We believe this work is culturally important in its original archival form. While we strive to adequately clean and digitally enhance the original work, there are occasionally instances where imperfections such as blurred or missing pages, poor pictures or errant marks may have been introduced due to either the quality of the original work or the scanning process itself. Despite these occasional imperfections, we have brought it back into print as part of our ongoing global book preservation commitment, providing customers with access to the best possible historical reprints. We appreciate your understanding of these occasional imperfections, and sincerely hope you enjoy seeing the book in a format as close as possible to that intended by the original publisher.
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