MESSRS. EDITORS In No. 7, page 53, of the Scientific American, you appeal to your Pennsylvania friends, by whom you doubtless mean Mr. Birkinbine and myself, to answer a communication you received trom J. D. Rice, of Philadelphia ; I have waited until this time to see what reply Mr. Birkinbine would make to this appeal, but as he has made none, I feel compelled, in self-defence to state how far this communication has any reference to me. As to the ram at Naples, N. Y., I never had any thing to do with it, and the first intimation I ever had of its not succeeding, was through the communication of Mr. Rice. All that I had to do with the ram at Girard College, was to calculate and make a draught of the curve of quickest descent for the driving pipe ; this I did at the request of Mr. Henry Tatham, who took a deep interest in the concern, and recommended the works to be erected, and through whom I sent the calculations and draught to Mr. Birkinbine, who, I infer from letters I received from him afterwards, laid it out accordingly. I understand, by those who ought to know, that this ram was discontinued only on account of the feed-water becoming too small for the increased demand, and not to anything depending on either Mr. Birkinbine or myself. If I have stated, above, anything incorrect, Mr. Birkinbine can correct me. JOSEPH C. STRODE.
This article was originally published with the title "Hydraulic Rams" in Scientific American 8, 17, 130 (January 1853)