74 LEJEUNEA HOLTII, A NEW HEPATIC FROM KILLARNEY. 
prevailing winds are westerly,—our gales all come from that quarter, 
and I have known them sufficiently violent to encrust our windows 
on the east side of Yorkshire with salt spray from the Irish Sea iach 
Solway Frith,—yet if spores, or plants, of Lejewnee have occasion- 
distance from the west coast. The 3 a species I have 
seen east of the Pennine chain is L. ulicina, in Upper Wharfedale 
(long. about 2° W.), but the late S. Anderson settee’ it at Salters- 
gate, within fifteen miles of the coast, in long. 0° 40’ W., on about 
the meridian of Vire, in Normandy, the only place where perianths 
of this species have been found. Yet, to say nothing of apparently 
congenial inland sites, we have many sheltered hollows and mouths 
of rivers and creeks, on the east poet of Britain, to which one might 
suppose these Lejeunee would have spread in the course of ages. 
The lower part of the course of the Cleveland Esk is through a calm 
in rare hepatics of Huropean (or arctic) type—Har panthus scutatus ; 
—— wmaseinate aes _Cephalozia ae crenulata, connivens, 
except the common E. serp fea. 
The moister and more equable climate of our western shores, 
soa to fice being bathed by the gulf-stream, is the only existing 
ause assign for the persistent difference in the hepatic 
sadelaties of the opposite shores of the British on ye seems 
at first sight inadequate to — 7 so repens? 
ks of the aay Amazon. Of mosses, precios peep 
which abounds on rocks and tree-roots bathed by the white waters 
he Orinoco and Casiquiari, as far down the latter as to where it 
nging 
upper course of the river, and in the time of flood sending out 
ee stems a = ong: and Lejewnea pms growing on 
ial trees, in the wet season submerged, in e dry hanging from 
emishes thirty feet pita like wisps of hay. Neither species is 
ever seen on white-water rivers; and en are only a few out of 
many ape el instances that might be cited. 
If we assume, what is indeed sebont probable, that certain 
Calae Sopa es first appeared in our islands about Killarney,— 
leaving out of question, for the present, how they came there,— 
and enquire by what agency they may have beets transported to 
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