Having known the Emir Abd-el-Kader during the time I held the office of French Consul at Mascara, from 1837 to 1839, and having again met him at Toulon in 1847, whither I had been ordered on special duty at the time of his first landing in France, I had full opportunity in my numerous interviews with him to appreciate his intimate acquaintance with all that related to the history of his country, as well as to all questions of horse-flesh. I did not hesitate, therefore, to ask his opinion on a subject of a purely scientific nature, which may nevertheless be of great moment, not only for the future interests of our colony, but for those of the country at large. The following is his reply, written under date of the 8th November, 1851. Glory to the one God, whose reign alone endureth for ever! Peace be with him who equals in good qualities all the men of his time, who aims only at what is good, whose heart is pure and his word abiding, the wise, the intelligent, the Lord General Daumas, on the part of your friend Sid-el-Hadj Abd-el-Kader, son of Mahhi-Eddin. Behold the reply to your inquiries:— 1st. You ask me how many days an Arab horse can march without rest and without suffering too severely. Know, then, that a horse sound in every limb, that eats as much barley as his stomach can contain, can do whatever his rider can ask of him. For this reason the Arabs say: "Give barley and over-work him." But without tasking him overmuch, a horse can be made to do sixteen parasangs day after day.[54] It is the distance from Mascara to Koudiat-Aghelizan on the Oued-Mina; it has been measured in cubits. A horse performing this journey every day, and having as much barley as it likes to eat, can go on, without fatigue, for three or four months, without lying by a single day. 2nd. You ask me what distance a horse can accomplish in a day. I cannot tell you very precisely, but it ought to be about fifty parasangs, or the distance from Tlemcen to Mascara. However, an animal that has performed such a journey ought to be carefully ridden on the following day, and allowed to do only a very much shorter distance. Most of our horses used to go from Oran to Mascara in a single day, and could repeat the journey for two or three consecutive days. On one occasion we started from Saïda about eight in the morning to fall upon the Arbâa, who were encamped at Aaïn-Toukria, among the Oulad-Aïad near Taza, and we came up with them at break of day.