HISTORY OF ESSEX HERONRIES. 51 value of the state of preservation as giving, in itself, reliable evidence of date. I have submitted the collection of potsherds that I have collected on the site, including inscribed Samian ware, to Mr. Christopher Hawkes. He said that it all came within the century of A.D. 50 to A.D. 150, and that there was no suggestion of Saxon influence. These sherds were not associated with the interments in any definite manner, but were scattered generally through the soil; they incidentally suggest that there may be a more important Romano-British site not far away, but they do not help in dating the interments. In spite of representations made by the College of Surgeons, I was informed that the police had removed a sackful of skulls and bones and had re-interred them in Nazeing Churchyard. As one's efforts to date the interments have failed up to the present, perhaps the loss is not so serious as it might have been. The site is not exhausted, but it must be confessed that so far it is not encouraging. It undoubtedly much resembles a Saxon graveyard, but until some contemporary relic is dis- covered I think the date must be left open. THE HISTORY OF ESSEX HERONRIES: ADDITIONAL COLONIES. By WILLIAM E. GLEGG, F.Z.S., M.B.O.U. IN my article "The History of Essex Heronries" (The Essex Naturalist, vol. 24, pp. 254-65) I described twenty extinct and nine occupied sites of colonies of the Heron (Ardea cinerea cinerea L.). As the result of the publication of the article referred to, I have been informed of two additional sites, one being- extinct and the other occupied. Mr. Geoffrey Dent informs me that up to 1934 there was a small colony at Hylands Park, near Chelmsford. There were usually only a few nests and they were built in trees close to the lake. With the permission of Mr. C. G. Hanbury I visited Hylands on 9th April, 1935, but could not find anything to suggest that there were any occupied nests. I saw what appeared to be three disused nests in high conifers in the plantation beside the lake. I also saw two or three birds, but they did not behave as though they were