162 PR. HARVEY ON A COLLECTION OF ALGJE 
1st. There are no local species of Chlorospermee. The few 
species that were found by Dr. Lyall are all plants of very 
wide distribution. 
2nd. The species of Melanospermee and Rhodospermee that are 
peculiar to the North-west Coast of America amount to 
about one-third of the whole number collected. 
3rd. About one-third of these peculiar species have represen- 
tatives in other countries ; namely, four in Australia, four 
in Europe, two in North-eastern Asia, and one at the Cape 
of Good Hope. 
4th. Forty-three per cent. of the whole number collected are 
common to the East Coast of North America, 45 per cent. 
to the Atlantie Coasts of Europe, 20 per cent. to the West 
Coast of South America, and 20 per cent. to the Australian 
shores. "This comparison shows that there is greater affinity 
between the marine vegetation of the Western Coasts of 
America and of Europe than between the Western and East- 
ern Coasts of America. 
5th. Out of those common to West and East America, all 
except six are also British ; while of those common to West 
America and to Britain, eight have not yet been recorded 
from the East Coast of America. 
6th. Of those common to South America, three-sevenths are 
also British ; and of those common to Australia, four-fifths 
are British. But of those species which are common to 
Britain and either to South America or to Australia, all 
but one (Carpomitra Cabrere) are so widely diffused that 
they may be regarded as almost cosmopolitan. 
On the whole, the collection does not give evidence of a very 
extensive marine flora, but rather of a vegetation abounding in spe- 
cies of larger and coarser growth, and deficient in those delicately 
organized species which frequent shallow bays and estuaries. The 
most remarkable and characteristic of the Vancouver-Island Alge 
are the Laminariacee, many of which are of such gigantic size 
that full-grown specimens can hardly be expected ever to be seen 
in Europe. The Nereocystis has a stipes said to attain the length 
of 300 feet. The Alarie probably have fronds of 20 to 30 feet in 
length—an enormous size for an undivided lamina of cellular tissue ; 
and the Costaria and Agarum, though much smaller, still reach 
dimensions which appear extraordinary when compared with the 
dwarfer Laminarioid plants of the British shores. The selecting 
of herbarium specimens, characteristic without being inconveni- 
