It seems scarcely necessary to discuss further a theory that was based on such erroneous data, but as the data were not known to be erroneous, and Linant propounded his theory with an air of authority, it has had considerable success in getting itself accepted. Guide-books, and even books used as school text-books on Egyptian history, show that his theory has been hitherto judged the correct one. It is, however, satisfactory to find that in the fifth edition (1890) of ‘Ancient Egypt’ by George Rawlinson (The Story of the Nations Series) the exact size and position of “Amenemhat’s reservoir” is admitted to be _sub judice_, and it would appear that this desirable attitude is the result of a challenge of Linant’s theory by Mr. Cope Whitehouse, who is reported as believing that the water was freely admitted into the whole of the depression (i.e. the Fayûm), which it filled, with the exception of certain parts, which stood up out of the water as islands from 150 to 200 feet high. Nevertheless, in spite of this new attitude towards the Linant theory, the map representing Linant’s Lake Mœris is to be found at the end of the book, without any remark to prevent readers from being misled by it, the map being described as “Map of the Fayoum, showing the Birket-el-Keroun and the artificial Lake Mœris.” (Plate VII. is from an earlier edition.) The Linant theory, examined in the light of the more accurate knowledge gained of the physical features of the Fayûm, and tested by the application of figures to determine its possible performances, can no longer stand, but falls to pieces; and the wonder is that, based as it was upon erroneous data and propped up by no solid support of facts, it stood so long. It may be said of it, to the credit of its author, that it was ingenious, but not that it was true. Since writing the foregoing concerning the Linant theory, Mr. Cope Whitehouse has kindly lent me his first papers on the subject, the earliest paper, that I had previously seen of his writings, being that which was read by him at the Manchester meeting of the British Association, September 2nd, 1887. I now find that he has been before me in stating many of the arguments I have used against the Linant lake theory, but it is satisfactory to find that we have independently arrived at the same conclusions, though by no means surprising, as I believe that any one, with the same amount of personal acquaintance with the Fayûm, would be naturally led to hold the same views of this fantastic theory. As early as 1882, Mr. Cope Whitehouse pointed out that the Linant lake satisfied none of the conditions which a lake professing to be Lake Mœris must satisfy, and he concluded one of his papers with a remark expressing his conviction that, when Lake Mœris shall be recognised by the light of discoveries yet to be made through further research, the site of the ancient lake will in no case be found to be that of the reservoir of M. Linant de Bellefonds Pasha.