The highly distinguished M. Ferdinand de Lesseps, when en route to Paris, kindly took charge of some cases of specimens for analysis. But the poorest stuff had been supplied to him by M. Marie; and the results, of which I never heard, were probably nil. The samples brought to England, by order of his Highness the Khediv, were carefully assayed. The largest collection was submitted to Dr. John Percy, F.R.S. Smaller items were sent to the well-known houses, Messrs. Johnston and Matthey, of Hatton Garden, and Messrs. Edgar Jackson and Co., Associates of the Royal School of Mines (fourteen samples). Finally, special observations were made by Mr. John L. Jenken, of Carrington, through Mr. J. H. Murchison, of "British Lead Mines," etc., etc., etc.; by Lieut.-Colonel Ross, the distinguished author of "Pyrology;" and by Lieut.-Colonel Bolton, who kindly compared the rocks with those in his cabinet. M. Gastinel-Bey's analysis of the specimens brought home by the first Expedition will be found at the end of Chap. VIII. The following is the text of Dr. Percy's report:-- Metallurgical Laboratory, Royal School of Mines, Jermyn Street, London Dec 13 1878. Dear Sir, I now send the results of the analytical examination of the specimens which you submitted to me for that purpose. The examination has been conducted with the greatest care, in the metallurgical laboratory of the Royal School of Mines, by Mr. Richard Smith, who, for the last thirty years, has been constantly engaged in such work; and in whose accuracy I have absolute confidence. It is impossible that any one should have taken greater interest in, or have devoted himself with greater earnestness to, the investigation. I have almost entirely confined myself to a statement of facts, as I understand that was all you required for the guidance of his Highness the Khedive. Section 1. Examination of the mineral specimens contained in the boxes marked as under. (An average representative sample of each specimen, of about six pounds in weight, was prepared for examination from portions broken off, or otherwise taken, by Mr. Richard Smith at the Victoria Docks.[EN#2] No. 1. "Box 22," Quartz from Mugnah (Makna). Quartz coloured black and red-brown with oxides of iron. These were of two varieties, marked 22a and 22b respectively. No. 2. The magnetic ironstone (22a) was examined and found to contain of-- Peroxide of iron (per cent.). . . .85.29 Protoxide of iron (per cent.) . . . 9.83 Silica (quartz)(per cent.). . . . . 3.28 The oxides of iron together contain of metallic iron 66.8 per cent. No. 3. The micaceous ironstone (22b) was examined and found to contain of– Peroxide of iron (per cent.). . . . 91.0 Silica. . . . . . . . . . . . . . . 5.52 The peroxide of iron contains of metallic iron 63.7 per cent. No. 4. "Box No. 14," Quartz from Mugnah, gave no results.