176 SHORT NOTES. 
the flowering state that the above record may be of interest. 
Dentaria was flowering in profusion, and at Pinner we found the 
Fritillaria still abundant in one meadow.—Frepericx J. Hanzury. 
in which they may become silicified; an myself mention 
in my paper another mode of the silicification of leaves, branches, 
small stems, and fruits in the neighbourhood of geysirs and hot 
springs. Lyell’s hypothesis is not confirmed by facts which I have 
observed; for all silicified trees which I have seen are silicified 
equally all round. Heavy showers occurring to trees on the lee- 
ward side of geysirs would cause a partial silicification of one side only ; 
besides which, it is stated that the bark of the trees cannot be pene- 
trated by the silica-holding hot water of the geysirs.’—O. Kunrzz. 
Inrropucep European Puants 1x Cume.— Mr. Thomas King 
writes as follows in the ‘Proceedings of the Natural History 
sent to him from Spain fifty or sixty yea o. Trifolium repens 
is now common on behind Val 0; Viola ata 
grows by the sides of streams, and little boys sell bunches of them 
in the streets. I saw the delion for. t time in June 
not spread. I suppose it is extinct by this time. But the most 
remarkable introduction of all is perhaps the Cardon (Cynara Car- 
dunculus), a plant from the south of Europe. It now covers large 
tracts in Chile, and is, I believe, the same thistle that has overrun 
the plains of the Argentine Republic.’ 
