122 “prevost’s” changed to “provost’s” (The provost’s guard and his prisoners). 126 “abcess” changed to “abscess” (an abscess, of the size of a pigeon’s egg). 130 “succeded” changed to “succeeded” (that he had never succeeded in exciting sweating). 136 “medecine” changed to “medicine” (a morsel of food nor any medicine). 137 “spunging” changed to “sponging” (washing their patients with vinegar and sponging them with it). 138 “possesion” changed to “possession” and “infalliable” changed to “infallible” (I am in possession of an infallible remedy). 139 “veneral” changed to “venereal” (an old venereal complaint). 145 “nitrie” changed to “nitric” (When our stock of nitric was at length exhausted). 153 “camphir” changed to “camphor” (a weak solution of sugar of lead, or of camphor). 158 “medecine” changed to “medicine” (Mr Paton, previously to embracing the military profession, had studied medicine). 160 “GENERAL REMARKS ON THE DISEASES.” Heading added. 161 “convalecents” changed to “convalescents” (convalescents would frequently suffer a relapse). 223 “GENERAL REMARKS ON THE YELLOW FEVER, AND THE RESEMBLANCE WHICH THIS DISEASE BEARS TO THE PLAGUE.” Heading added. Footnote 5 duplicated word “down” removed (On being brought down to Rosetta). INTRODUCTION. In consequence of orders, from the Court of Directors to the Government in India, it became my duty to give some account of the health of the troops employed on the late expedition from India to Egypt, and to describe the prevailing diseases. The sources of information, to which I had recourse, were the reports made to me, and an extensive correspondence with the medical gentlemen of the army; particularly those employed in the pest-establishments. Besides these, to which my situation, at the head of the medical department of the army from India, gave me access, other sources of information, regarding the plague, were open to me, as a Member of the Board of Health in Egypt. Some may think the present a very short, and many may think it an incomplete account; but, I trust, it will not be found incorrect. I have purposely avoided doubtful speculations and hypotheses. Anxious, above all things, to adhere closely to facts, and keep these unmixed with any notions of my own, I have, in most cases, published the extracts from letters to me, without altering a word of the correspondence.