Excerpt from Index to Digest of United States Patents of Air, Caloric, Gas, and Oil Engines, 1789-1905: Chronologically Arranged Under Two Hundred and Five Subdivisions, In Five Volumes, Drawings, Letter-Press, and Indices, Containing the Full Drawings, the Full Claims, and a Short Description of Each InventionBut all this laboratory work or mental conjecturing had evidently not risen to the dignity of practical application in 1831, judging from the following paragraph in a report of a Select Committee of the House' of Commons of Great Britain, which investigated prime movers for a specific purpose, to wit.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.