In May, 1836, Captain Clark went on the recruiting service, where he remained till October 4, 1838, when he was granted a three months' leave. He joined his company at Fort Towson in May, 1839, and continued with it from that time till March, 1841, accompanying it meanwhile (October, 1840) to Florida. He obtained a three months' leave on surgeon's certificate of ill health March 23, 1841, but did not rejoin till February 16, 1842. In the interim he was placed on duty for a short time as a member of a general court-martial, which happened to be convened at St. Louis, where he was then staying. He remained with his company from February to November, 1842, when he again received a leave for the benefit of his health, and did not return to duty till April 26, 1843 (after his regiment had been ordered to Florida), when he rejoined it at Jefferson Barracks. He continued with it (with the exception of one short leave) from April, 1843, till June, 1845, but the returns show him to have been frequently on the sick report during that period. On the 2d of June, 1845, his company being then encamped near Fort Jessup in expectation of orders for Texas, he again procured a leave on account of his health, and has not since been able to rejoin, reporting monthly that his health unfitted him for the performance of duty. The signature of his last report (not written by himself), of November 30 (herewith[5]), would seem to indicate great physical derangement or decrepitude, approaching, perhaps, to paralysis. From the foregoing it appears that during the last seven years (since October, 1838) Captain Clark has been off duty two years and four months, the greater part of the time on account of sickness, and that even when present with his company his health is so much impaired that very often he is unable to perform the ordinary garrison duties. Under these circumstances it is respectfully submitted, for the consideration of the proper authority, whether the senior captain of infantry should not be passed over and (as Brevet Major Noel,[6] the next in rank, is utterly disqualified) Captain Martin Scott, of the Fifth Infantry, promoted to the vacant majority. It is proper to state that Captain Clark has always been regarded as a perfect gentleman, and as such, as far as I know, is equal to any officer in the Army. I am, sir, most respectfully, your obedient servant, R. JONES, _Adjutant-General._ [Remarks indorsed on the foregoing report by the General in Chief.] DECEMBER 30, 1845.