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[JANUARY—JUNE, 1915. 
The 
Essex Naturalist: 
BEING THE 
JOURNAL 
OF THE 
ESSEX FIELD CLUB, 
EDITED BY 
WILLIAM COLE, Assoc.L.S., 
Honorary Secretary and Curator. 
(Content#. page. 
Illustrations of Mycetozoa, Dedicated to Samuel Dale, M.D., in 
Micheli’s ‘‘ Nova Plantarum Genera,” 1729. By Miss Gulielma 
Lister, F.L.S. .. .. .. .. i 
Note on the Occurrence of Chalky Boulder Clay at Chingford. By 
Percy G. Thompson .. .. .. .. .. 2 
The Essex Field Club. Reports of Meetings, January igi4—• 
March, 1915 .. .. .. .. .. 4—35 
Mycetozoa found during the Fungus Foray on 17th October 1914 33 
Meeting of the Delegates of the Corresponding Societies of the 
British Association at Havre. 1914. By W. M. Webb, F.L.S... 
A Bibliography of the Publications of Local Scientific Societies. 
By W11. Cole, F.L.S., and Henry Whitehead, B.Sc... .. 38 
The Dating of Early Human Remains. By S. H. Warren, F.G.S. 40 
The Chigwell Row Medicinal Springs : A Late-Eighteenth-Century 
Account of them. B\ (?) tLe Rev. Dr. William Martin Trinder. 
Edited by Miller Christy, F.L.S. (with Plate I.) .. 60 
Note on Leaf-Folding Caterpillars. By Ernest Linder, B.Sc., and 
Charles Key .. .. .. .. .. 70 
Notes on the Low-Level Gravels of the River Lea and their 
Palaeolithic Implements. By Arthur Wriglky. .. .. 73 
Notes on a Fossiliferous Exposure of London-Clay at Chingford, 
Essex. By Arthur W rigley .. .. .. .. 74 
Palaeolithic Implements from Wanstead Park. By C. H. Butcher 76 
Tree Trunk Water-Pipes. By T. V Holmes, F.G.S. .. .. 79 
The Slipper Limpet ( Crep-ditla ) in Essex .. .. .. 81 
Cultivation of Medicinal Plants in England .. .. 82 
Notes—Original and Selected .. .. .. .. 84 
Inserted Loosely :—Supplement to the Year Book , 1914—15, 
and Title-j ge and Index to Vol. XVII. 
1 
The Authors alone are responsible for the statements and opinions contained in 
their respective papers. 
PUBLISHED BY THE CLUB, AT THE ESSEX MUSEUM OF 
NATURAL HISTORY, STRATFORD, ESSEX. 
Entered Stationers’ Hall.] - [Published August 1915. 
Editorial communications to W. Cole, Essex Museum, Romford Road, Stratford, 
and Advertisements to Messrs. Bknham and Company, Limited, 
Printers, Colchester. 
