and one of the thirty-eights at Philadelphia; one forty-four at Boston; one at New York; one thirty-eight at Baltimore, and one at Portsmouth, New Hampshire. In addition to these, a 32-gun frigate, the “Essex,” was built at Salisbury Point, Massachusetts, by private subscription, and given to the government. [Illustration: CLIPPERSHIP MANITOU] Mr. Humphreys had the contracts for the Philadelphia-built frigates, and on May 10, 1797, he launched the 44-gun frigate “United States,” which was the first ship of the regular navy to be water-borne. Thus to Philadelphia belongs the credit of having fitted out the first squadron of the Continental navy in 1775, and of launching the first ship of the regular navy in 1797. In 1799, Mr. Humphreys completed a third frigate, named the “Philadelphia.” This ship is described in some histories as a “forty-four,” and in others as a “thirty-eight.” As a matter of fact, she was neither; but properly rated, under the rules then in vogue, as a 40-gun frigate. This difference was due to the fact that she carried thirty long 18-pounders on her gundeck as against twenty-eight 18-pounders in the “Constellation” class, or as against thirty long 24-pounders in the “Constitution” or 44-gun class. The “Philadelphia” was beyond question the most perfect frigate of her day. She was the same length as the “Constitution,” but of less beam, slightly less draught, and on finer lines. In her design, Mr. Humphreys had sacrificed to speed some of the battery power of the forty-fours, and therefore had to substitute 18-pounders for 24-pounders on the gundeck. She was the fastest sailing war-ship in the world, beating the “Constitution” by nearly two knots an hour. In her first, and unfortunately her last, voyage, from this country to Tripoli, she logged on one occasion three hundred and thirty-two knots in twenty-four hours, and on another three hundred and thirty-seven, the latter run being an average slightly exceeding fourteen knots. She was lost in Tripoli harbor in 1803. It is not too much or too little to say of either that Joshua Humphreys held a professional rank similar to that of Charles H. Cramp, that of the foremost naval architect of his era; and with exceptions, not worth mention, they are the only American naval architects whose designs for sea-going war-ships have been adopted by the navy. It is worthy of remark in this connection, that when the plans of Mr. Humphreys were adopted in 1794-95, the government not only had no naval constructors of its own, but in fact no Navy Department, except a Bureau in the War Department, so that Mr. Humphreys could have no competitors but other private ship-builders. Mr. Cramp’s designs, however, have been adopted under the scrutiny of a highly competent and most critical corps of regular naval constructors and marine engineers.