ON THE ERRATIC BLOCKS OF ENGLAND, WALES, AND IRELAND. 143 
One mile from Kirby Muxloe, on the road to Newton Unthank, 
is an isolated block by the road-side. Size 4 ft. x 3 ft. x 2 ft. 6 in. 
This fine block, with sharp angular sides, has never been known to 
have been moved, and is of the white variety of syenite from Markfield. 
The whole of these isolated and groups of boulders, described under 
this head, are spread over an area of about two miles long by half a 
mile wide, the longer direction being south-east of Markfield, from 
whence they are supposed to have been derived. Some are entirely 
exposed, others are partly buried in the drift, which lies very thick in 
the valleys, but on some of the uplands is not many inches deep. From 
observations made some miles further to the south-east, there would 
appear to be a continuous line of these erratics from the syenitic rocks 
round Markfield and Groby. There must still be many thousands buried 
in the drift, as in any comparatively shallow excavation made over this 
area, erratic blocks are sure to be met with. 
Hertfordshire-—Mr. H. G. Fordham contributes records of erratics and 
notes referring to several parishes in the north of Hertfordshire, in con- 
tinuation of his former Report on that district. 
Kelshall_—tThe village of Kelshall is situated about 500 ft. above sea- 
level on the ridge of the chalk outcrop bounding the watershed of the 
Thames on the north, and dividing it from that of the Cam or Rhee. 
This ridge, with the country to the south within the watershed of the 
Thames, is covered with boulder clay; on the north, in the valley of 
the Rhee, and to the north-west, in the district draining into the Ivel, 
some of the more prominent bills and transverse ridges are capped with 
patches of boulder clay (as at Ashwell, Report, 1881, p. 207 et seq., and 
at Bygrave). The two following boulders, when they were examined in 
September 1880, were lying together in a grass field, near the end of a 
eart-shed, on the north side of the road leading into the village from the 
west, and about 100 yards north of the church, upon the ridge already 
referred to, just on the dividing line or water-parting between the Thames 
and Rhee. 
1. Smoothed, with five flat, or nearly flat, facets on the top and sides 
as itnow stands. Mr. J. Vincent Elsden, F.G.S., describes the material 
from a small specimen as :—‘ Very much decomposed throughout. The 
interior shows traces of an original dark crystalline rock, containing 
much magnetite which has weathered reddish-brown. Felspar crystals 
(probably plagioclase) are distinguishable. Probably dolerite.’ 3 ft. 
Ain. x 2 ft. 9 in. x 2 ft. 
2. Roughly rhomboidal, much worn, and the upper surfaces, and to 
some extent the sides, furrowed by atmospheric action. Compact lime- 
stone: mountain limestone. 2 ft. 7 in. x 2 ft. 6in. x 2 ft. 
Bygrave-—Byegrave adjoins Ashwell on the south-west. The church 
and a few houses and cottages, hardly amounting to a village, stand on 
the summit of a low isolated hill, within the area draining into the Ivel. 
The whole of the higher part of this hill is covered with boulder clay, 
its highest eleyation being about ‘320 ft. above sea-level (bench-mark on 
church 314 ft.). The only boulder of any size lies on the top of the hill, 
on the side of the road, about 70 yards west of the church :— 
Yellowish, compact sandstone. About 3 ft. x 2 ft. x 2 ft. 
