274 
NOTES ON ESSEX GEOLOGY. 
find no examples in the collections referred to. Vitvea, nitidulu 
^ as lecoided foi the first time, and fourteen other new records 
were made from a collection which was examined after the paper 
was read : a notable haul. 
The fiist volume of A. J. Jukes-Browne’s great monograph 
on the Upper Cretaceous rocks, 19 deals with the underground 
Gault of Essex on pp. 370, 372, 373, from the results of four 
deep borings. Of course we are bound to protest at Saffron 
W alden being placed in Suffolk, and I am not disposed to agree 
with the view that either from the total depth having been 
overstated, 01 fiom boring having gone askew, the Gault was 
not pierced there ; but of that I shall speak elsewhere. 
110L 
The sixth and last edition of my little Guide to the Geology 
of London™ appeared in this year, and it has been long out 
of print. The new map of the London District having been 
issued, H. B. Woodward wrote in illustration of it “ The Geology 
of the London District ” (1909), and this being fuller and newer 
than the Guide, and at the same time no dearer, it has taken the 
place of the earlier work. 
1902 . 
F. W. Harmer’s “ Sketch of the Later Tertiary History of 
East Anglia/’ 21 covers much the same ground as his paper 
of 1900, so far as Essex Crag is concerned (pp. 430-442), and 
Essex Drifts are not dealt with. 
1903 . 
In the “ Summary of Progress of the Geological Survey 
for 1902,” there is a short paragraph on Essex (p. 24), a note 
on the Woodford and Ilford Railway (p. 194), and an essay 
on the Drifts of the Thames Valley near London, by T. J. Pocock 
(pp. 199-207), in which a section at Upminster is noticed, as 
showing Boulder Clay beneath brickearth and said to be under¬ 
lain by sand. This is no great way from the sections described 
by Holmes (1892, 1894). The author regards the brickearth 
19 Gcol. Survey Memoir, “ The Cretaceous Rocks of Britain.’’ 
20 Mem. Geol. Survey, pp. x , 102. 
21 Proc. Gcol. Assoc., Vol. xvii., pts. 9, 10, p. 416, etc. 
