THE ESSEX FIELD CLUB. 277 bird which in each case sat on the single egg, neither possessing a yolk. Four sets of eggs of the Jackdaw exhibit the mud- daubing habits of this species. The collector states that three eggs, Barnston Lodge, 1.5.36, are the most heavily daubed he had ever seen and with the filthiest mud. This mud-daubing is now recognised as a habit of the Jackdaw and has been re- corded from widely separated parts of this country and it has also been observed on the Continent. The theory has been advanced that the eggs were so coated for the purpose of con- cealment as they were placed in such a position that they might be seen from the outside. Although this may be a feasible explanation it must be added that mud-daubed eggs have been found in completely concealed situations. Professor Newton while writing on eggs expresses the view that hardly any branch of the practical study of natural history brings the student so closely into touch with many of its mysteries. There may be differences of opinion as to how far this is true but a study of the collection, which has just been added to our Museum, will demonstrate that eggs present many opportunities for the philosophical mind. Suitable thanks have been conveyed officially to Mr. Owen for his great gift, but this article would be incomplete without a further expression of gratitude. THE ESSEX FIELD CLUB—REPORTS OF MEETINGS. 766TH ORDINARY MEETING. SATURDAY, 31ST OCTOBER, 1936. This Meeting was held at 3 o'clock on the above afternoon in the Physics Lecture Theatre of the Municipal College, Romford Road, Strat- ford, with the President, Mr. John Ramsbottom, O.B.E., Sec.L.S., etc., in the chair. Only thirty-four members attended, the day being wretchedly wet. Sir Robert Armstrong-Jones, as Delegate from the Club, read his Report on the Fourth Quinquennial Anglo-American Conference of His- torians, which was held in London from July 6th to 11th, 1936. The thanks of the Meeting were accorded to Sir Robert for a most interesting account. The present Meeting was devoted to short communications from Members, there being no set paper. Mr. Hugh Main exhibited various insects and described by means of lantern-photographs the life-histories of most of them ; they included a