to pumps; Part III. to shafting, resist- mining, and the metallurgical process adopted ance of ships, and propellers, in Section III. in treatment and extraction. The text em- of which, devoted to the screw propeller, there braces a critical examination and commentary are 85 illustrations; Part IV.… … and on every page of it there is evidence of the [See note at end of list about copies of these patents.) most: careful consideration of the composition. The work is no mere bald catalogue of exhib- Acetylene generator, I. Holly ............ 789,856 its; for under each department there is given…
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