188 Prominent Yorkshire Workers. 
tural operations have levelled most of the mounds, rendering 
it absolutely impossible for any later worker to have carried 
out the investigations. 
In another way, also, has Mr. Mortimer earned our grati- 
tude, viz., by carefully mapping the various intricate pre- 
historic earthworks which formerly crossed the wolds in all 
directions. These are carefully shewn on a map in his volume, 
a map which contains information of priceless value ; and one 
which could certainly not be produced at any future time, as 
year after year the earthworks are being destroyed ; almost all 
the smaller ones having already disappeared. 
Further, (and this is particularly gratifying to workers in the 
East Riding), Mr. Mortimer has retained ev ery specimen in 
the district in which it was found. 
Geologically, Mr. Mortimer has accomplished much by 
keeping a record of the Driffield drainage sections, by obtaining 
particulars of the strata, etc., in the wold wells, and in other 
ways. Details of this work have been published in the Pro- 
ceedings of the Yorkshire Geological Society and elsewhere. 
He has amassed a fund of information relating to old 
manners and customs in East Yorkshire, much of which he 
has put together in a manuscript entitled “ Reminiscences of 
my Boyhood days,’ which will doubtless be published ere long. 
It is nearly eighty-six years since Mr. Mortimer was born 
in a thatched farm-house at Fimber,* and the fact that he is 
amongst us to-day, and so active, is doubtless largely due to the 
nature of his scientific recreations, which have taken him so 
much into the fields and fresh air. 
The results of his work will be appreciated by future genera- 
tions of scientists. 
LIST OF “PAPERS ETC. "BY, oJ. KR: WMORTIMER:. 
On A BONE SPEAR HEAD (?) FROM THE ESSEX COPROLITE 
Pits.—' Geologist,’ 1863, p. 298 (Illustrated). 
AN ACCOUNT OF THE OPENING OF A CELTIC TUMULUS NEAR 
FIMBER, YORKSHIRE.— The Reliquary,’ Oct., 1868. 
THE OPENING OF A BARROW AT GRIMTHORPE.—' Reliquary,’ 
1869, vol. ix., p. 180. 
NOTICE OF THE OPENING OF A LATE BRITISH GRAVE AT 
GRIMTHORPE, NEAR KIRBYUNDERDALE, cS =.— Reli- 
quary,’ January, 1869. 
On A PECULIAR STRIATED STRUCTURE IN THE CHALK.— 
[Abstract]. “Quart. Journ. Geol. Soc.’, 1873 
A DESCRIPTION OF THE GEOLOGY OF THE EASTBURN FARM, 
NEAR DRIFFIELD.—(Map). ‘ Journal Royal Agric. Soc.’, 1873. 
* On June r5th, 1825. 
———— 
Naturalist, 
