300 
that such masses of seed can have been carried by wind or birds 
to cover these thousands of acres, and the gore must therefore 
have grown from seed lying dormant in the No dou 
in the ordinary operations of ploughing and ging of the ground 
in years before the war much seed was buried which has been 
brought to the surface by the shelling of the ground and subse- 
quent weathering. In this connection the presence of charlock 
on the more recently dug graves, w where the chalk now forms the 
actual surface, is of interest, since it aide further proof of the 
longevity of this seed when well buried in the soil. 
Further north towards Arras, where the soil is deeper, docks, 
thistles, and a more permanent wild vegetation predominate, 
giving a dreary and derelict effect in comparison with the splen- 
dour and magnificence of the chalky slopes of the Somme baitle- 
field. 
List oF PLayTs. 
The following is a list of plants observed on two brief visits 
to this area.. A few common docks and thistles occurred in 
places, otherwise the vegetation was almost entirely composed of 
annuals; grasses of various kinds were also present, in addition 
to scattered plants and patches of Pica but the species were 
not definitely determi nad. 
Papaver Rhoeas, = poppy. 
Fumaria officinalis, L., fumito 
Raphanus Raphanistrum, L., white charlock. 
Brassica Sinapis, Vis., ellow charlock. 
Matricaria Chamomilla, L., chamomile. 
Sonchus arvensis, l., corn sowthistle. 
' Sonchus oleraceus, L., sowthistle. 
Specularia Speculum, A. DC., looking-glass flower, 
Anagallis arvensis, L.., scarlet pimpernel. 
Myosotis arvensis, Hoffm., forget-me-not. 
pepreto chen arvensis, L. 3 ee sp ncaa 
og’ s mercury. 
Juncus bufonius. L., var. gracilis, St. Amand, rush. 
A few grasses and occasional plants or patches of a Se 
and wheat. 
| 
s 
