i88 The Irish Natziralisf, October, 
A. — Native Species — 14. 
Cardamine hirsuta. Lonicera Periclymenum. 
Polygala vulgaris. Hieracium Pilosella. 
? Viola tricolor. Leontodon autumnalis. 
? Geranium dissectum. Jasione montana. 
? Trifolium pratense. Erj^thraea pulchella. 
Vicia Cracca. Carex echinata. 
Lathyrus pratensis. Blechnum Spicant. 
B. — Introduced Weeds — 14. 
Fumaria officinalis. Veronica agrestis. 
Raphanus Raphanistrum. ? St achy s palustris. 
Spergula arvensis. S. arvensis. 
Anthemis Cotula. Lamium purpureum. 
Chrysanthemum segetum. L. amplexicaule. 
? Senecio vulgaris. Chenopodium album. 
Linaria Elatine. Euphorbia Helioscopia. 
C. — ? Erroneously Recorded — 2. 
Chenopodium rubrum. Euphorbia Paralias. 
Negative evidence is dangerous. Nevertheless, in con- 
sideration of the long and close scrutiny which I was able 
to give to the island, I have no doubt that many of these 
are now extinct, nor is there any cause for wonder in this. 
As regards Group A, the increase of both gulls and rabbits 
has so altered the vegetation that the only wonder is that 
so little change has to be recorded. Some of them may 
still exist in the close -cropped turf, but they will probably 
soon have entirely disappeared, since the rabbits do not 
let them seed. 
Group B consists mostly of weeds of tilled land. Most 
of these are certainly extinct, the hard close-cropped turf 
which now covers the former tillage offering them no chance 
of life. 
As regards Group C, I cannot but think there are mistakes 
here. Chenopodium rubrum is recorded as growing " indispu- 
tably native, in characteristic abundance .... 
among the rabbit -holes and rocky ground at the barren 
