414 
OBITUARY NOTICES. 
or “run of the hill,” has been omitted when it is of sufficient 
importance to influence the surface features. This is, undoubtedly, 
a defect. 
Perhaps the greatest difficulty in the making of a geological map 
is where to discriminate between a thin subsoil and a soil in which 
is incorporated all that remains of a thin and weathered stratum. 
The difficulty appears where a shallow patch of gravelly soil 
appears on a clayey tract, and if an outlier of gravel be mapped, 
difficulty again arises in defining its limits. Troubles of this kind 
must ever attend the path of the geological surveyor. 
Where, however, indications of the thickness of soils and thin 
subsoils are given, and the survey has been carefully made on 
a large scale map, the result should, for all time, be of the greatest 
service in questions, not only of agriculture, but in reference to 
sites for buildings, sewage farms and local water supply : subjects 
in which geology, agriculture, and sanitary science are alike 
concerned. 
XXII. 
OBITUARY NOTICES. 
THE LATE D. C. E URL INGHAM OE KING’S LYNN. 
By Charles B. Plowright, M.D. 
On the 1st April, 1901, at his residence, 81 High Street, King’s 
Lynn, died Daniel Catlin Burlingham. Born in 1S23, he belonged 
to a small group of naturalists who, at a time when Natural History 
was much less popular than it now is. pursued with great pleasure 
to themselves its study in West Norfolk. A member of the 
Society of Friends, which at that time formed in Lynn a small 
but highly intellectual body, of good social position and greatly 
respected, Mr. Burlingham possessed so marked a personality that 
he was known practically to all the inhabitants of the district in 
