Vol. XIX —Part Y. 
~Edc{_ Js • t> 
'BRAfft 
[APRIL 1921—SEPT. 1921. 
The 
Essex Naturalist. 
being THE JOURNAL of the 
ESSEX FIELD CLUB. 
Edited BY PERCY THOMPSON, F.L.S., Honorary Secretary 
assisted by 
HENRY WHITEHEAD, B.Sc 
QUmtenU. paoh 
Ten Years’ Progress in Lichenology: A Presidential Address. 
By Robert Paulson, F.L.S., F.R.M.S. {with four Plates) .. .. 27.3 
Samuel Harsnett, Archbishop of York. By George Rickword, 
F.R.Hist.S. .. ... .. .. .. .. .. .. 287 
Bird Notes in Wanstead Park, February 1877. By the late 
Arthur Lister, F.L.S. .. .. .. .. .. .. 296 
British Oysters: Past and Present. Supplementary Notes. 
By Alfred Bell • • •• •• .. .. .. .. .. ^00 
A MS. Essex Florula. By Prof. G. S. Boulger, F.L.S., F.G.S. .. 303 
Essex Field Club: Reports of Meetings, 30th October 1920 to 
2nd April 1921 ( with two Plates) ' .. .. .. .. 307 
Essex Field Club: Report of the Council for 1920-21.. .. 325 
Notes: Original and Selected.. .. .. .. 302, 324, 326—328 
Inserted Loosely: Index, Title-page, etc., to Vol. XIX. 
The Authors alone are responsible for the Statements and Opinions contained in 
their respective Papers. 
STRATFORD, ESSEX : 
PUBLISHED BY THE CLUB, AT THE ESSEX MUSEUM OF 
NATURAL HISTORY. 
Editorial communications to Percy Thompson, Essex Museum, Romford Road, 
Stratford, and Advertisements to Messrs. Bk.nham and Company, Limited, 
Printers, Colchestei. 
Published Sept. 1921.] 
Price, to Non-Member*, 6/k. 
