MR. G. rr. HARRIS ON THE FLORA OF GREAT YARMOUTH DISTRICT. 141 
tridactylites, Paget says, grows on town walls, but is becoming rare; 
he reports it as common at Burgh. It is easily found on the Burgh 
walls, but I cannot find it on those at Yarmouth. 
Of the Leguminosie, Melilotus officinalis has lately appeared on 
the South Denes. Its arrival there is due to the heaps of river 
mud the Port and Haven Commissioners have caused to be deposited 
on the river bank, — heaps that are full of seeds of flowers common 
to the river bank, and marshes higher up the river. I am inclined 
to think that some of the Trifolia are becoming scarce, both on the 
Denes and in the marshes. 
T. mbterruneum and scabrum are still abundant on the South Denes, 
and fra</iferum is fairly plentiful in the marshes ; but suffocafum 
and (jlomeratum must be much less abundant than they were years 
ago, for they are by no means easy to find. It should bo remem- 
bered that since Paget’s time much of the South Denes has been 
enclosed by the government, and the original turf, to a great extent, 
converted by covering it with a richer soil containing the seeds of 
ordinary pasturage. Even on the unenclosed space a very different 
turf is gradually taking the place of the older sort. This is 
inevitable — for the encampments, shows, and races that are now 
held there every summer, leave their mark in the shape of bare 
places of considerable extent, which during the winter, on such a 
loose and sandy soil, tend to increase rapidly under the powerful 
action of high winds. In order that the whole place may not be 
turned into a Sahara, it is necessary every spring to dump down a 
quantity of soil, and re-sow it with ordinary hay seed. 1 think 
I may say, without exaggeration, that three-quarters of the South 
Denes now needs to be subjected to that treatment. It will there- 
fore easily be seen that the rare Clovers run a very poor chance of 
perpetuating their kind. 
It may be noticed that the natural order of Onagraceae does not 
contain the species Epilobium roseum. This species, well known 
about London, does not occur at all in this district as an indigenous 
species. I know of one case, however, where it has been introduced 
into a foundry yard in sand used for foundry purposes, which is 
brought from Erith on the Thames, ^s the seeds of Epilobium 
are furnished with a pappus, it is a flower that would easily multiply 
if the conditions were favourable, but outside the foundry yard 
I have been able to find no traces of it. 
