442 C. Reid and H. N. Ridley—Fossil Arctic Plants. 
account of the geology, merely quoting one of Prof. Prestwich’s 
sections as an example of the rest, to show which bed contains the 
Arctic plants :— 
Section 1n 8.W. corner oF Hoxne Brick-FIEeLD, 1859. 
@. Surtace soil, traces of sandyand,oravel ieee ye eso dene ese oe seeaeaebeeeeeebise 1 to 2 
6. Brown and greyish clay, not calcareous, with an irregular central 
carbonaceous or peaty seam. ‘Two flint-implements. Bones of Bos. 10 to 12 
ec. Yellow sub-angular flint-gravel, with a certain proportion of small 
chalk pebbles, and a few pebbles of siliceous sandstone, quartz, and 
other old rocks. lephas. The matrix of this bed, in places, 
(LOUISTTSL ES} WHO y ANIC Nach aos ob GuconeboeBbosdauabosdecdoE wpceuagoudaadase6Bo 3 tol 
d. Bluish and grey calcareous clay, in places very peaty ; lower part with 
seams or partings of sand. Wood and vegetable remains. Land 
and freshwater shells. Bones of Mammalia (Deer, Horse, Elephant). 3 t 
e. Gravel like ¢, but smaller, more worn, and with more chalk pebbles... 1 t 
Jf. Caleareous grey clay, more or less peaty, with freshwater she//s (bored 
to 17 feet, but no bottom was reached) ............2ccccsceccscecenesesoees 17 
Other sections showed that the whole deposit rested on Boulder-clay. 
From bed d Prof. Prestwich obtained wood of Oak (?),’ Yew and 
Fir, and subsequently some leaves ‘‘ apparently of Bilberry” (these 
belong really to Salix myrsinites). He also records the following 
species of land and freshwater mollusca :— 
Pisidium amnicum, Mill. Limnea palustris, Linn. 
Spherium corneum, Linn. truncatulus ? Linn. 
Unio (fragmentary). Planorbis albus ? Mull. 
Arion ater, Linn. (some calcareous grains) spirorbis, Linn. 
Bythinia tentaculata, Linn. Succinea putris, Linn. 
Helix hispida? Linn, Valvata piscinalis, Linn. 
Zonites nitidula? Drap. 
To this list we can now add, from specimens obtained during our 
recent visits, Pisidium fontinale, var. Henslowianum, Helix rotundatus, 
and Valvata cristata; also teeth of two genera of freshwater fish— 
Esox and Leuciscus.” 
Mr. Thomas Belt subsequently tried to prove the interglacial age 
of the implement-bearing loams, laying special stress on the oc- 
currence in the pit in Oakley Park of a small patch of chalky 
Boulder-clay overlying the loam.° 
A year or two later Mr. H. B. Woodward and one of the writers 
of this paper visited Hoxne, and found that there was a little Boulder- 
clay in the position indicated by Mr. Belt. But the visit made in 
May of the present year showed the patch more clearly, and it 
proved to be merely the remains of some clay which had been 
brought to the pit at an early date—perhaps more than one hundred 
years ago—when the clay was first dug. This Boulder-clay distinctly 
rested in one place on the recent vegetable soil. 
Numerous references to the implements from Hoxne, and several 
1 Prof. Prestwich informs us that the oak wood was not found by himself, 
but was obtained from one of the men, who stated that pieces occasionally occur 
in a very sound condition, like the specimen which he produced. The wood is 
evidently fossil, but the exact horizon from which it was obtained may have been 
wrongly observed. 
2 Determined by Mr. E. T. Newton. 
3 Quart. Journ. Sci., n.s. vol. vi. pp. 289-3804. 
