MORTIMER : SECTIONS OF DRIFT. 
381 
configuration of Holderness and the edge of the wold hills would 
be given by the waves of the retiring sea. Meteoric influences 
have since then done comparatively little. 
ON FLOTS. BY J. R. DAKYNS, M.A., OF H.M. GEOLOGICAL SUR- 
VEY ENGLAND AND WALES. 
THE word " Flot " may be briefly described as a miners term for 
ore lying between the beds, or at certain definite horizons in the 
strata. 
As very little is said about Flots in manuals of Geology, it is 
to be presumed that not much is known about them to Geologists: 
under these circumstances every little helps, and I propose to 
contribute my mite towards a batter knowledge of the subject. 
In books, the terni used is generally flat or flatting, as if to 
indicate ore lying flat instead of vertically , but it is to my mind 
extremely doubtful whether the term Flot, which is the only form 
of the word I have ever heard used by miners in this connection, 
is really equivalent to flat : at all events the term is used where 
the flot or the bedding plane in connection with which the ore 
is found, is anything but flat, but often inclines at a high angle. 
I think the word is most likely of German origin, as so many 
mining terms are. Nor do the miners who talk of flots, so pro- 
nounce the ordinary word flat, as far as I am aware. 
The flots with which I am acquainted are of two kinds, dis- 
tinct yet allied. 1st, Flots connected with " cross veins " 2nd. 
Flots connected with courses of Dun Limestone. I will describe 
them in order. 
1st. Flots connected with " cross veins." — To describe these 
I must first explain the term 44 cross vein." In the country where 
these occur, viz., the neighbourhood of Greenhow Hill, the or- 
dinary lead-bearing veins are generally E. and W. veins ; using 
